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Your migration : I4GL to BDS
Just recompile! Business Development Language, which forms the backbone of Business Development Suite, is 99.9% compliant with the Informix 4GL language. Migration is therefore extremely easy. In most cases just a recompilation of the I4GL source code is enough to produce a graphical rendering of your application without the need to touch your business logic. This will very quickly give you mouse support, some basic graphic features and support for a variety of industry standard databases.
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Step by step migration
BDS allows a step-by-step migration:
Step 1 – Install and recompile your source code. Step 2 – Clean the source code according to the section 'What needs to be updated' (see below). Step 3 – Improve the look of the application using the graphical widgets at your disposal. At each step, your application will run in ASCII mode and in graphical mode from just a single source code.
One source code for I-4GL and BDS
If for any reason you need to keep your source code compliant with I4GL, compile time flags will tell the compiler to ignore BDS specific code.
Drawback of this easy migration
Due to the 25-rows by 80-columns nature of the screen layout, proportional fonts cannot be used: forms must have the same display styles and windows cannot be resized.
If these are requirements of your application, you should migrate to Genero.
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PROBLEM WITH PRE-REQUISITES?
IN DOUBT?
MIGRATION CASE STUDIES
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