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000-913 exam Dumps Source : Informix 4GL Development
Test Code : 000-913
Test denomination : Informix 4GL Development
Vendor denomination : IBM
: 149 actual Questions
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IBM Informix 4GL Development
Jun 5, 2012
Informix Genero, a original IBM providing developed below partnership with 4 Js edifice tools, is a analytic enhancement to the Informix 4GL language and atmosphere that offers extensive capabilities for establishing simultaneous net and computer GUI applications, reviews, and internet services.
trying to find a short, inexpensive selection to rewriting IBM Informix 4GL functions? With IBM Informix Genero, clients can recompile 4GL functions and hurry them as GUI and internet functions whereas holding the enterprise common sense. converted purposes are ready to installation on a variety of structures, in most situations and not using a code change and very shrimp trying out. It makes it viable for users to leverage their skill foundation to supplant "green screen" functions and raise the graphical interface over time, whole while the applications remains obtainable.
ASuperset of Informix 4GL
Informix Genero is a superset of Informix 4GL. as a result of very nearly whole 4GL syntax and semantics exist in Informix Genero, the Informix Genero compiler can recompile the 4GL source code. In inevitable cases, the Genero compiler is stricter than the 4GL compiler, however any changes required for the Genero compiler are additionally convincing for the 4GL compiler. once the 4GL supply code is recompiled with the Genero compiler, it could actually then be hurry the usage of the a number of Informix Genero runtime paraphernalia options. since the 4GL supply code continues to be unchanged, the checking out exertion required to movement modernized functions into creation is significantly decreased.
After recompilation, the ensuing GUI or net application can assume talents of prosperous user-interface add-ons whereas leveraging the underlying 4GL commerce logic. And, since the converted software is noiseless entirely purposeful and usable after complication, pull-down menus, toolbars, sincere dialog bins, and different commonplace GUI controls may also be phased in over time, and the brand original utility can also be automatically attainable to the user group. clients can interact with the software the exhaust of the equal keyboard-based mostly controls, role keys, default menus, and other basic controls that acquire been described for 4GL.
Modernizing Versus converting to Java
Let's believe an instance of a touchstone Informix 4GL application suite including
242 one at a time compiled 4GL programs
1522 4GL supply-code modules
596 monitors (4GL varieties)
575 KLOC of 4GL supply code
This software provides information-entry and records-renovation operations through a character-primarily based interface, and has some batch-updating and reporting capabilities. The application includes 596 displays, of which 250 (~forty%) are used for internal facts maintenance and housekeeping operations. The terminal 346 displays can be establish to the user for facts entry, but simplest about 100 of these displays are used generally.
converting the original utility to Java can be an "all or nothing strategy," at least with esteem to leveraging the common 4GL supply code. The total utility would acquire to be rewritten. Assuming approximately 160 traces of code per day (in response to the Gartner Group1 estimates for code modernization), the coding exertion for this assignment may be substantial: over one hundred sixty adult months. Assuming that original code written in Java has an error fee of approximatley sixty one defects per one thousand lines of code2, additional exertion would should be spent debugging and fixing probably as many as 35K mistakes. additionally, since the original utility would be thoroughly original Java logic, a complete trying out and certification technique would should be performed, as with every other original application.
Modernizing the customary utility with Informix Genero would reuse the 4GL supply code. The 4GL supply code would be recompiled with the Informix Genero compiler so that the utility might hurry on quite a few kinds of betray purchasers. The compiler direction within the build file might effortlessly be modified to compile the Genero purposes within the identical build ambiance. There would likely be a number of minor variations between the 4GL and Genero compilers and there would be alterations mandatory for coping with external C code. After any required adjustments can be made, the Genero utility would be capable of hurry in text mode, just fancy the common Informix 4GL utility.
Configuring the Informix Genero laptop customer would enable the Genero software to be rendered in GUI mode on home windows, Linux, and Mac working techniques. creating a small XML configuration file for the Informix Genero software Server would allow the identical application to be rendered in net browsers. testing the application may start automatically. as a result of this software could be the exhaust of the existing 4GL syntax and semantics, the purposeful and verification trying out would require significantly less exertion than for a original Java-primarily based utility.
the hassle to increase this software would requisite to focal point best on the graphical person interface of the 100 monitors that are -used commonly for facts entry. The underlying pleasant judgment can be left largely unchanged. The other 246 screens which are introduced to the consumer may well be deployed in a phased approach, perhaps 50 screens a month over a 5-month duration. The ultimate 250 monitors (and the underlying logic) may well be left unchanged as a result of they might be used infrequently through inside group of workers. much less exertion could be spent on testing and the certification for the Informix Genero challenge than for the Java project.
The bottom line
changing the Informix 4GL software to Java would assume tremendous time and be lofty priced. The compatibility between Informix Genero and Informix 4GL saves time and funds by means of leveraging the underlying enterprise common sense of the latest utility. Informix Genero minimizes preliminary charges and efforts, and permits the graphical consumer interface to be more suitable over time while the application remains obtainable to the person neighborhood.
1Gartner community, "Forecasting the international IT services trade: 1999"
2Geoffrey Phipps, "evaluating followed trojan horse and productiveness rates for Java and C++," application-practice & event, v.29(4), p.345-358, 1999
concerning the writer:
Shawn Moe is a application architect at IBM, focusing on UI modernization, SQL compatibility, utility building, and tooling assist for the Informix database servers. For extra assistance, travel to www-01.ibm.com/software/facts/informix.
Press liberate abstract:
4 J's company construction Suite presents graphical construction device for Informix 4GL users. while conserving investments in 4GL source code, it makes it viable for developers to open functions seamlessly to huge diversity of graphical computing environments. It offers N-tier thin customer architecture and scales to thousands of clients concurrently. users can write functions once and deploy anywhere, without recompilation for distinctive working programs.
normal Press unencumber:
4 J's commerce edifice Suite offers a Graphical edifice tool for Informix 4GL users
At a GlanceFour J's company development Suite:o allows for applications to hurry throughout heterogeneous client, database, and operating paraphernalia environments for a single supply code across the intranet and the Interneto Improves developer productivity via edifice on present 4GL enterprise logico Develops aim-constructed commerce purposes selection to J2EE, EJB, .Neto makes it viable for you to region in writing once and deploy anywhere, without recompilationo permits initiatives to be completed on time and within finances while specializing in the commerce logic instead of the infrastructureo provides N-tier skinny client architecture and scales to heaps of clients simultaneously
OverviewFour J's is Popular inside the Informix(TM) group as the author of Informix Dynamic 4GL, a graphical edifice tool for Informix 4GL (I-4GL) clients.
The company construction Suite brings original cost to enterprise applications written in I-4GL or Dynamic 4GL (D4GL). This mighty and scalable utility server platform accesses multiple databases (Informix, DB2®, Oracle, MS SQL, and MySQL) and GUIs (X11, Microsoft® home windows®, Java(TM), HTML, WML, and XML) with minimal effort. which you can write functions once and install them any place, devoid of the deserve to recompile for diverse working techniques (UNIX®, Linux, and Microsoft home windows NT®).
using enterprise development Suite, agencies and unbiased utility carriers (ISVs) can raise productivity and strengthen their investments in latest 4GL company common sense, enabling them to address original consumer wants and market opportunities at a cost-effective.
The items during this announcement can be establish as allotment of the IBM Developer earnings Channel application Remarketing software. Product assistance has been offered by means of the software corporation, 4 J's development equipment, LTD.
Key PrerequisitesUNIX, Microsoft home windows 2000 Server, XP, AIX® 5.X or Linux 7.x and eight.x
Availability DateJuly 8, 2003
DescriptionFour J's enterprise development Suite is the fastest technique to achieve windows, the information superhighway, and cellular instruments for latest and original 4GL functions.
whereas protecting investments in 4GL source code, edifice staff, and person training, company development Suite makes it viable for developers to open applications seamlessly to a wide variety of recent graphical computing environments. Its three-tier, thin-customer structure presents unmatched utility efficiency and scalability with server aid for home windows NT, Linux, and UNIX structures.
With 4 J's Open Database Interface (ODI), connectivity is equipped to database servers reminiscent of DB2, Informix, and other database servers through a library of endemic database drivers.
Thomas trade replace
Legacy functions Vs. up to date purposes
on the possibility of over simplification, I believe that a "up to date utility" may also be illustrated with the assist of the photograph in determine 1. For probably the most part, when legacy functions are outlined, one continually thinks of monolithic functions that acquire been written in older programming languages,. An illustration of this is COBOL, which is a terminal-based mostly user interfaces that constantly makes exhaust of facts shops equivalent to ISAM, flat information, and proprietary database administration techniques. The left most backside of the diagram shows this type of utility. because the diagram demonstrates, utility architectures acquire advanced into net and mobile person.
determine 1 - simultaneous software
Interfaces that can be loosely coupled with exterior purposes are often primarily based in the cloud. This diagram doesn't array that purposes developed these days are most often capable of be hosted on virtualized servers and/or in containers. The diagram also doesn't array that functions developed these days are developed with newer programming languages and with a couple of different database technologies.
This dichotomy between legacy functions — both from a feature, usability, cost, and relative hardship perspectives — give increasingly efficacious motivations for stakeholders to substitute and modernize these legacy functions.
what's the CUBA-Platform?
The CUBA-Platform gives a full-stack structure for constructing three tier applications. It includes wide-spread points for commercial enterprise apps, similar to gentle deletion, records-aware accessories, file storage, and unreasonable plane modules, including authentication, authorization, audit of data, and others. This category is most confiscate for developing ERP-like programs, line of commerce functions, or custom utility for the corporate phase.
On the surface, the CUBA-Platform appears to be particularly confiscate to edifice customized applications from scratch. youngsters, a better appear reveals a platform that gives the potential to reuse existing databases, auto generate domain fashions from present databases, instantly create leisure APIs from current artifacts, standardize front-conclusion by using prebuilt responsive UI templates, flip existing commerce logics into regular capabilities, and, finally, integrate any relaxation primarily based third-birthday party capabilities devoid of coding. These facets get the CUBA-Platform the best option for the mixing of a plenary stack Java framework with legacy applications.
What Are TransformixTools?
TransformixTools for CUBA-Platform are a couple of customized engineering add-ons and adapters that link legacy purposes to the CUBA Platform. amongst these are database adapters, terminal betray adapters, COBOL services integration components, and Eclipse plugins. These paraphernalia serve as CUBA-Platform plugins to facilitate the mixing of the legacy utility to CUBA facets.
what is ModernizationInPlace™
For the stakeholders of legacy purposes for enterprise purchasers, ModerinzationInPlace™ is an ingenious method to software edifice and efficient open source expertise that helps developers integrate present legacy purposes with the entire stack CUBA-Platform enterprise development framework. This non-invasive method transforms the software prerogative into a multi-mannequin construction platform. present tools can be used to extend and boost current legacy utility code, while, at the identical time, modern development tools may also be used to increase and extend application functionality. therefore, ModernizationInPlace™ makes customizations and upgrades to the utility functionality fairly painless.
ModernizationInPlace™ is a framework for boosting the application's commerce layer (with web provider APIs) and database
tools from Transformix enable the application person interface to be supplemented with browser entry that allows for combining current inside applications displays, fancy Legacy applications (mainframe eco-friendly screen purposes), with exterior web services and web pages with ordinary websites designed without integration interfaces (APIs), XML information, and databases.
The CUBA-Platform is an open supply, plenary stack Java framework that offers an open supply basis.
in accordance with a Java expertise stack, this is compiled of the most advantageous practices for designing a enterprise application's database, commerce layer protest model, and web API
There is not any hidden magic; the generated server utility is an everyday repose net carrier that will also be debugged the usage of its supply and the regularly occurring Java IDE's.
toward the Multi-model functions Platform
determine 2 - Multi-model applications Platform
yes, Virginia. it is viable to acquire your cake and devour it too, as a minimum, in as far as legacy functions are worried. by means of that, I hint it is viable to enable for carrying on with development in the legacy paradigm in parallel with edifice in more moderen paradigms. device 2 illustrates an ambiance wherein an application was built for an HP 3000 in COBOL with a proprietary HP TurboIMAGE database management paraphernalia that has been migrated to Linux with a PostgreSQL RDBMS. here's achieved with most efficacious minimal changes to application sources. during this atmosphere, the COBOL functions nevertheless exhaust the identical APIs they used on the HP 3000. for instance, database calls are TurboIMAGE calls and betray IO calls are VPLUS calls. despite the fact, the exhaust of the aggregate of the CUBA-Platform with the TransformixTools enhancements makes it viable to betray the terminal based person interface in a web browser and the database can be accessed using SQL. hence, on the identical time that the legacy classes are used, the utility can be superior within the identical manner as a newly developed Java-based mostly CUBA software is greater. moreover, the builders who drudgery on the software as a CUBA application don't should acquire an HP 3000 capabilities or advantage to carry out their jobs.
five Steps to ModernizationInPlace™
determine three offers a lofty plane overview of how the multi-mannequin applications platform is applied. A SQL available database is needed in an exertion to assume plenary expertise of the elements the CUBA-Platform has to offer. therefore, the 1st step is to migrate the software information entry to enable for multi-model SQL entry. This potential that the customary utility will noiseless be capable of entry the information the exhaust of the gardenvariety APIs, while, on the equal time, other functions, corresponding to CUBA, can be able to exhaust SQL to entry that identical records. Step two is to enable browser entry to the utility monitors. in this 2nd step, it additionally includes the setting up of the CUBA-Platform alongside the software. The application takes on the traits of a multi-mannequin software once the CUBA-Platform is installed. This capacity that from then on the software may also be extended and greater with simultaneous paraphernalia via developers with shrimp or no skills of the legacy programming atmosphere.
under is an accelerated version of the five steps towards making a multi-model purposes platform.
the first step: A Multi-model records Platform
A universal "trick" in migrations is to deliver a simulated legacy system API on prerogative of a relational database. This allows the existing software to entry the facts using the identical database calls or APIs. at the identical time, this gives option trade common interfaces to more recent and commercially accessible off-the-shelf applications. this is the method Transformix uses. here are some examples:
HP 3000 TurboIMAGE or Eloquence Database to RDBMS
TransformixTools offers a TurboIMAGE API that allows for purposes that had been at the dawn written for the HP 3000 to acquire the statistics and schema's migrated to Oracle, PostgreSQL, MSSQL, IBM DB2, or IBM Informix with few or no alterations to the application courses. Then, other applications can access the facts the usage of touchstone APIs comparable to SQL.
MS access to RDBMS
Microsoft entry means that you can conveniently create databases to rescue and current your facts in forms and reports. When starting, a database may well be very primary and trivial, but, over time, it could possibly turn into greater essential as you add statistics, points, and even partake it with others. It positive factors a lifetime of its personal and the common design turns into critical.
determine three - ModernizationInPlace 5 Steps
probably the most crucial architectural designs is splitting the database prerogative into a front-end and lower back-end database. here's how entry is designed to assist you sheperd multi-consumer databases and vastly simplify how you boost the application over time.
setting apart your application and information databases makes it viable for you to assist distinctive clients and improve the utility with out wiping out their statistics. Assuming the software does not change that frequently, the separation also makes it simpler to just backup the records database due to the fact that handiest that is altering each day.
Splitting a database is a comparatively basic thought. you assume an present entry MDB/ACCDB database with its tables, queries, types, studies, macros, modules, etc. and divide it into two databases:
The "back-conclusion" database that just incorporates the tables
The "front-end" database that incorporates the application objects (every thing apart from the tables) and links to the tables in the again-conclusion database
This design is particularly helpful in multi-user environments where the lower back-end database is stored on a community and consists of the shared information. each and every user then has a duplicate of the entrance-conclusion database on their laptop pointing to the shared database.
In multi-user environments, the entrance-end database can additionally comprise tables that are private to the person. These local tables can store the user's settings, decisions, temporary or intermediate tables for processing statistics or reviews, and many others.
once the database is smash up, using ODBC to access it from MS entry and the exhaust of MS access as a frontend enables the backend to be accessed with the CUBA-Plaform.
Microfocus ISAM to Ctree
FairCom's No+SQL know-how offers flexibility with an ISAM utility's statistics architecture by allowing information ISAM of any classification to be saved within your checklist structure, without any pre-defined schemas. on the equal time, it supports trade-general SQL (relational) interfaces and high-performance NoSQL (non-relational) interfaces to the identical information on the equal time.
c-treeACE is an ANSI-compliant SQL database with assist for every shrimp thing you are expecting from an RDBMS, together with saved processes, triggers, consumer-defined features, ODBC, JDBC, and a wealth of accustomed interfaces. c-treeACE provides simultaneous access to the identical facts by means of NoSQL interfaces for the premiere in performance.
TransformixTools provides a CUBA-Platform interface to C-tree SQL.
Informix 4GL to Aubit4gl and RDBMS
once the database is in the RDBMS CUBA-Platform, it will also be used to lengthen and increase the utility.
Step Two: Browser UI
TransformixTools provides options in response to the CUBA-Platform and Vaadin that flip legacy application person interfaces into browser-based interfaces.
Our terminal emulation respond provides an immediate web browser based mostly terminal emulator to key company systems, including UNIX or a VMS paraphernalia on any gadget with zero client software setting up. This will be centrally managed. The Transformix solution is in accordance with the CUBA-Platform. hence, at this step, the CUBA-Platform is region in and made accessible to the application developers.
VPLUS API Intercept
a further technique they exhaust is the terminal API intercept approach. The choicest illustration is their VPDM HP VPlus alternative. They transfigure the HP VPLUS kinds file to Java courses and create an xmlrpc-based mostly intercept library that implements a plug-suitable substitute for VPLUS calls.
MS access varieties
This respond is based on the CUBA-Platform, as smartly. The TransformixTools DBForms solution contains utility paraphernalia that flip MS access types to net pages written in Java code and is purchasable for viewing through your cyber web browser. A prerequisite for this is to present MS entry tables and queries into their flip and transfigure them to RDBMS. For now, this respond is limited to PostgreSQL.
Step Three: greater Browser
A composite software (also known as a "Mashup") is a site component or software that shows blended content combined from heterogeneous sources. conclusion-clients don't acquire to grasp which underlying sources and purposes this aggregated information is coming. In its least difficult implementation, including relatively touchstone exterior enhancements to a legacy consumer interface, equivalent to dropdowns or a kind-forward search, can drastically boost the consumer suffer with the software. These two facets require database access this is smash away the common software and they may also be implemented with out modifying the original software. device 4 suggests what the consumer sees on their computing device and is an additional composite of the long-established application screen. On exact of that, a Google Map is made purchasable through a repose API and the CUBA-Platform. This, too, does not require a modification of the gardenvariety software.
determine 4 - Composite utility screen
using the CUBA-Platform in Step Two isn't only a improvement for growing the browser UI in the first location; it additionally makes it feasible to lengthen and raise the software from the person's aspect of view devoid of changing the original utility.
Step 4: cell and internet features
The CUBA-Platform become delivered to the utility ambiance in Step Two as a vehicle to facilitate bettering the user interface to the utility. Step Three gave us the possibility to ascertain how CUBA can advocate extra boost consumer interfaces. In Step four, they begin to appear to be on the sincere vigour of the platform. It gives a no Code and Low Code Platform that means that you can reshape the way you interact together with your legacy UNIX or VMS equipment, in addition to your home windows, Linux, or MAC gadget. With legacy terminal based applications, they acquire seen that it gives us paraphernalia to advocate alternate green monitor person experiences into simultaneous interfaces that are delivered over the net. This gives you the liberty to accommodate and evolve company tactics, instantly realizing original efficiencies and gaining speedy ROI and tactical benefits that are conveniently no longer obtainable somewhere else. What's more, this can also be executed by using a brilliant person or national Developer.
rest APIs are whole the rage these days. using relaxation and different HTTP(S) based APIs acquire turn into the lingua franca of the world of computing. The CUBA-Platform is constructed on properly of relaxation APIs and it performs very neatly with repose APIs provided through others. the exhaust of CUBA as a modernization groundwork for legacy systems transforms your host environment into a dynamic allotment of your enterprise programs interface layer, which is at whole times limited to the transaction layer of the commercial enterprise. These original tools will unleash the investment on your host system to freely engage with and feed tertiary company methods, expanding the provision, timeliness, and integrity of crucial company statistics.
somewhat greater About establishing With the CUBA-Platform
At its maximum stage, the CUBA-Platform carries the design time CUBA Studio, which works in concert with either Intellij conception IDE or Eclipse IDE. At runtime, it uses a Java software server, usually, Apache Tomcat.
figure 5 - CUBA lofty plane Overview
The CUBA Studio is a specialized device for fancy a glisten utility edifice that streamlines edifice applications upon CUBA Platform. With Studio, applications are up and running within minutes. It additionally accelerates modernizing legacy purposes by way of scaffolding the information model and CRUD UI on sincere of an latest database.
Studio is designed for exhaust in parallel with a Java IDE (figure 6) , so developers don't acquire to abandon their liked working environments. The focal component of the construction system is the studio. projects are open in Studio and lots of the configuration and enhancement is managed with Studio at the side of the IDE. additionally, trying out and debugging are managed through Studio as well.
figure 6 - Studio with IDE
applications developed the usage of the CUBA-Platform occupy three tiers as proven in device 7. they're the database tier, the middle tier, and the customer tier. These tiers are linked the usage of repose and HTTP APIs.
figure 7 - CUBA unreasonable degree software architecture
the exhaust of this structure, the identical backend will also be used for internet, computer, cellular, and repose API applications.
Step five: Loosely Coupled net functions
one of the vital critical ideas on the earth of software engineering is the conception of slack coupling. In a loosely coupled design, add-ons are unbiased and adjustments in one will now not influence the operation of others. This method presents ultimate flexibility and reusability when components are added, replaced, or modified. add-ons that may operate independently and acquire a neatly-defined communique channel are loosely coupled.
The structure of the CUBA-Platform is constructed to advocate this slack coupling of components. therefore, when legacy applications are built-in with the CUBA-Platform, it enables their elements and accessories for exhaust with the identical flexibility as more these days developed application add-ons.
ModernizationInPlace™ is the Transformix computing device corporation approach for changing legacy functions into future-proof commercial enterprise purposes with the CUBA-Platform. This approach helps groups create multi-model purposes structures that allow legacy purposes and utility extensions written within the CUBA-Platform (supplied by a plenary stack Java framework) to drudgery facet-by way of-aspect. using this strategy, the modish benefits of utility modernization are completed immediately and at low possibility.
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Informix 4GL Development
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Jun 5, 2012
Informix Genero, a original IBM offering developed under partnership with Four Js development Tools, is a analytic enhancement to the Informix 4GL language and environment that offers extensive capabilities for developing modern web and desktop GUI applications, reports, and web services.
Looking for a quick, cost-effective alternative to rewriting IBM Informix 4GL applications? With IBM Informix Genero, users can recompile 4GL applications and hurry them as GUI and web applications while retaining the commerce logic. Converted applications are ready to deploy on various platforms, in most cases with no code modification and very shrimp testing. It allows users to leverage their skill foundation to update "green screen" applications and enhance the graphical interface over time, whole while the applications remains available.
ASuperset of Informix 4GL
Informix Genero is a superset of Informix 4GL. Because virtually whole 4GL syntax and semantics exist in Informix Genero, the Informix Genero compiler can recompile the 4GL source code. In inevitable situations, the Genero compiler is stricter than the 4GL compiler, but any changes required for the Genero compiler are also convincing for the 4GL compiler. Once the 4GL source code is recompiled with the Genero compiler, it can then be hurry using the various Informix Genero runtime system options. Because the 4GL source code remains unchanged, the testing exertion required to promenade modernized applications into production is greatly reduced.
After recompilation, the resulting GUI or web application can assume advantage of flush user-interface components while leveraging the underlying 4GL commerce logic. And, because the converted application is noiseless fully functional and usable after complication, pull-down menus, toolbars, actual dialog boxes, and other commonly used GUI controls can be phased in over time, and the original application can be immediately available to the user community. Users can interact with the application using the identical keyboard-based controls, role keys, default menus, and other basic controls that were defined for 4GL.
Modernizing Versus Converting to Java
Let's reckon an illustration of a typical Informix 4GL application suite consisting of
242 separately compiled 4GL programs
1522 4GL source-code modules
596 screens (4GL forms)
575 KLOC of 4GL source code
This application provides data-entry and data-maintenance operations through a character-based interface, and has some batch-updating and reporting functions. The application contains 596 screens, of which 250 (~40%) are used for internal data maintenance and housekeeping operations. The remaining 346 screens are available to the user for data entry, but only about 100 of those screens are used frequently.
Converting the original application to Java would be an "all or nothing approach," at least with respect to leveraging the original 4GL source code. The entire application would acquire to be rewritten. Assuming approximately 160 lines of code per day (based on the Gartner Group1 estimates for code modernization), the coding exertion for this project could be substantial: over 160 person months. Assuming that original code written in Java has an error rate of approximatley 61 defects per 1000 lines of code2, additional exertion would requisite to be spent debugging and fixing potentially as many as 35K errors. Also, because the original application would be entirely original Java logic, a complete testing and certification process would requisite to be performed, as with any other original application.
Modernizing the original application with Informix Genero would reuse the 4GL source code. The 4GL source code would be recompiled with the Informix Genero compiler so that the application could hurry on various types of array clients. The compiler path in the build file could easily be changed to compile the Genero applications in the identical build environment. There would likely be a few minor differences between the 4GL and Genero compilers and there would be changes needed for dealing with external C code. After any required changes would be made, the Genero application would be able to hurry in text mode, just fancy the original Informix 4GL application.
Configuring the Informix Genero Desktop Client would allow the Genero application to be rendered in GUI mode on Windows, Linux, and Mac operating systems. Creating a small XML configuration file for the Informix Genero Application Server would allow the identical application to be rendered in web browsers. Testing the application could begin immediately. Because this application would be using the existing 4GL syntax and semantics, the functional and verification testing would require substantially less exertion than for a original Java-based application.
The exertion to enhance this application would requisite to focus only on the graphical user interface of the 100 screens that are -used frequently for data entry. The underlying logic could be left largely unchanged. The other 246 screens that are presented to the user could be deployed in a phased approach, perhaps 50 screens a month over a five-month period. The remaining 250 screens (and the underlying logic) could be left unchanged because they would be used infrequently by internal staff. Less exertion would be spent on testing and the certification for the Informix Genero project than for the Java project.
The Bottom Line
Converting the Informix 4GL application to Java would assume significant time and be expensive. The compatibility between Informix Genero and Informix 4GL saves time and money by leveraging the underlying commerce logic of the existing application. Informix Genero minimizes initial costs and efforts, and allows the graphical user interface to be enhanced over time while the application remains available to the user community.
1Gartner Group, "Forecasting the Worldwide IT Services Industry: 1999"
2Geoffrey Phipps, "Comparing observed bug and productivity rates for Java and C++," Software-Practice & Experience, v.29(4), p.345-358, 1999
About the author:
Shawn Moe is a software architect at IBM, focusing on UI modernization, SQL compatibility, application development, and tooling advocate for the Informix database servers. For more information, travel to www-01.ibm.com/software/data/informix.
Press Release Summary:
Four J's commerce development Suite offers graphical development tool for Informix 4GL users. While preserving investments in 4GL source code, it enables developers to open applications seamlessly to wide variety of graphical computing environments. It provides N-tier thin client architecture and scales to thousands of users simultaneously. Users can write applications once and deploy anywhere, without recompilation for different operating systems.
Original Press Release:
Four J's commerce development Suite Offers a Graphical development tool for Informix 4GL Users
At a GlanceFour J's commerce development Suite:o Enables applications to hurry across heterogeneous client, database, and operating system environments for a single source code across the intranet and the Interneto Improves developer productivity by edifice on existing 4GL commerce logico Develops purpose-built commerce applications alternative to J2EE, EJB, .Neto Enables you to write once and deploy anywhere, without recompilationo Allows projects to be completed on time and within budget while focusing on the commerce logic rather than the infrastructureo Provides N-tier thin client architecture and scales to thousands of users simultaneously
OverviewFour J's is known within the Informix(TM) community as the author of Informix Dynamic 4GL, a graphical development tool for Informix 4GL (I-4GL) users.
The commerce development Suite brings original value to commerce applications written in I-4GL or Dynamic 4GL (D4GL). This robust and scalable application server platform accesses multiple databases (Informix, DB2®, Oracle, MS SQL, and MySQL) and GUIs (X11, Microsoft® Windows®, Java(TM), HTML, WML, and XML) with minimal effort. You can write applications once and deploy them anywhere, without the requisite to recompile for different operating systems (UNIX®, Linux, and Microsoft Windows NT®).
Using commerce development Suite, enterprises and independent software vendors (ISVs) can increase productivity and strengthen their investments in existing 4GL commerce logic, enabling them to address original user needs and market opportunities at a low cost.
The products in this announcement are available as a allotment of the IBM Developer Sales Channel Software Remarketing program. Product information has been provided by the program supplier, Four J's development Tools, LTD.
Key PrerequisitesUNIX, Microsoft Windows 2000 Server, XP, AIX® 5.X or Linux 7.x and 8.x
Availability DateJuly 8, 2003
DescriptionFour J's commerce development Suite is the fastest way to achieve Windows, the Internet, and mobile devices for existing and original 4GL applications.
While preserving investments in 4GL source code, development staff, and user training, commerce development Suite enables developers to open applications seamlessly to a wide variety of original graphical computing environments. Its three-tier, thin-client architecture offers unmatched application performance and scalability with server advocate for Windows NT, Linux, and UNIX platforms.
With Four J's Open Database Interface (ODI), connectivity is provided to database servers such as DB2, Informix, and other database servers through a library of endemic database drivers.
Thomas Industry Update
New 4GL Release Puts Data First
In the Windows NT world, fourth-generation language (4GL) products acquire been limited to niche players in a market saturated with whole varieties of development tools. But one 4GL product provider, TopSpeed Corp. (www.topspeed.com), is determined to thrust its flavor of automated application development into the mainstream, especially among small shops with scarce programming talent.
The latest incarnation of TopSpeed's Clarion rapid application tool family now includes knowing agents that automatically mirror preferences throughout an application, sparing the developer repetitive work. A data dictionary helps populate predefined style sheets, and the agents engage developers in an interactive dialog to determine the size and scope of the application model. An enterprise edition of the tool includes version control software as well.
The exhaust of 4GLs has not been common in the Windows NT and PC server development world, which tends to be dominated by the exhaust of Visual Basic and C and C++ languages, or tools such as Delphi from Borland (www.borland.com) and PowerBuilder from Sybase (www.sybase.com). Surveys of ENT readers acquire establish that only 11 percent of Windows NT shops exhaust any type of 4GL in their development efforts. A study by International Data Corp. (IDC, www.idc.com) finds that 4GL-based application development tends to be limited to departments and workgroups, rather than enterprise-scale deployments. IDC also estimates that the overall 4GL/RAD market is growing at an anemic rate of 2.3 percent a year.
In fact, most of TopSpeed's corporate customers acquire been at the departmental level, states Roy Rafalco, CEO of TopSpeed. Most of TopSpeed's customers attend to be independent software developers and VARs, he adds.
One company that has had success with a Clarion 4GL deployment is august Rapids, Mich.-based RidgeView Stamping Co. This $60 million contractor to universal Motors has built an entire MRP system from the ground up using Clarion, says Jack Toering, systems manager for RidgeView. The system links plant machinery to a network running Novell NetWare, Windows NT and Windows 3.1. A Citrix server at the main plant provides interfaces to Clarion-built applications from three remote plants.
TopSpeed claims it can automate the development of up to 90 percent of an application. In addition, applications can hurry "nearly as fancy a glisten as C code," Rafalco says.
RidgeView’s Toering agrees that his Clarion-developed applications hurry "faster than typical Windows applications." RidgeView's Clarion-generated MRP system manages electronic document interchange transmissions from GM and automatically distributes drudgery orders to vendors. The system also monitors data from machines on the shop floor, Toering says.
The primary advantage of Clarion-based solutions is that they're built on top of existing databases, he notes. RidgeView's systems are currently based on Sybase SQL Anywhere, with some now being migrated to Oracle. Switching databases underneath applications is fairly simple with the 4GL, he adds.
Along with Oracle and SQL Anywhere, TopSpeed's Clarion supports SQL Server, Informix and AS/400 DB2. TopSpeed is also shipping an edition that Web-enables Clarion-based applications.
While some 4GL vendors acquire added Java as an output, TopSpeed has not made up its reason whether to fully advocate the language, Rafalco states. "We're not a huge company, so they can't travel off in different directions. But we're certainly interested by Java and the Web architecture."
The tool has become increasingly modular or object-oriented, and will also advocate Microsoft COM components. Rafalco, however, is quick to note that Clarion is not limited to the Windows platform. "We'll port this automation technology to other viable platforms," he says.