Birgitta Hauser

Independent Database and Software Architect

Create or Replace… DDS with DDL Database Objects

With the latest releases and technology refreshes the SQL data definition language (DDL) for creating and maintaining database objects was enormously enhanced. DDS on the other hand is stabilized. But still a lot of applications even those with a modern graphical interface are based on DDS described files. The excuse DDL enhancements cannot be used, because of the DDS description and the native I/O access of these files, does not count any more. With Reverse Engineering, the SQL code for DDS described objects can be retrieved. CREATE OR REPLACE statements allow DDS described files to be converted into SQL defined database objects, while the programs that use these files can stay untouched