4GL

A bonus is that this also requires a smaller, less specialized team to maintain it, making it a clear win over 3GL platforms.

DATABASE: Name of the database that the 4GL function might have used.

Teams that currently use or have used a Fourth Generation Language (4GL) may be interested in EGL for a number of reasons.

The next-generation 4GL platform should provide a robust, extensible integrated development environment (IDE).

Informix 4GL supports editing UTF data with the same key strokes used for English characters.

Created years -- if not decades ago -- these applications were oftentimes customized by an IT staff trained in older 3GL and 4GL languages.

However, toward the end of the 1990s, 4GLs began to show their limitations.

First, these teams typically value high productivity programming, or they would not have invested in a 4GL in the first place.

Unless 4GL vendors provide extensibility options and even source code, developers must operate within the limits of the tool.

Contrary to classic 4GLs, new platforms should not introduce any proprietary languages or protocols.

But classic 4GLs do not have the proper architecture to deliver this "smart client" technology.

So given the increased burden of development and maintenance, it could be beneficial to consider 4GLs again.

Upon request to deploy, this configuration file is passed to the PERL script (w4glc) to deploy the given 4GL function as a Web service.

Informix 4GL also enables applications to use the UTF characters as search criteria for finding content within rows.

A next-generation 4GL platform should address the demand for server-side computing by providing n-tier architecture.

A modern 4GL platform should also provide robust options for both native client and browser-based deployments.

The limited scalability in classic 4GL tools is rooted in their underlying architecture.

Informix 4GL, or simply I4GL, supports a programming language for interacting with the Informix database servers.

Using tools, automatically convert 4GL structures into Jave EE components, which are then deployed on the target platform.

Figure 2 shows the architecture of the 4GL in an SOA environment.

Utilizing the existing 4GL functions as Web services opens up many possibilities for making use of them in any modern language.

This article described the Informix 4GL features and how UTF-8 support enhances Informix 4GL applications by handling double-byte languages.

Given these added requirements, developers face tough choices and the argument of 3GL vs. 4GL takes on new dimensions.

Transform incrementally using a 4th Generation Language (4GL) approach: In this case, use a 4GL language to define applications.

Complex data types supported in 4GL are not yet supported to deploy as a service.

4GL 7. 50. xC2 comes with a demonstration program "i4glsoademo" , which uses a C interface to consume the Web service.

For more information on 4GL, refer to the 4GL Reference Manual.

Listing 9 shows the output of the report1. 4gl program.

4GL removes it and replaces it with spaces denoted by s1.

4GL tools cannot be run over a wide area network (WAN) for reasons of security and performance

The approach we use that mixes 3GL and 4GL features addresses some of the limitations of classic 4GLs, allowing you to

For robust browser-based deployments, a 4GL should support all modern browsers without plug-ins or proprietary technologies

Preparing to develop a 4GL application

Exploring the 4GL features with UTF-8 character set

Reports using the 4GL language