DP4 allows you to add and view version information to your databases:
You can set the Database Version Information by using the Version/Security option of the MAKEDB utility.
You can use the Database Integrity checking utility DBCHECK to View the Database Version Information
The DBERA utility can be used:
To keep track of the changes you have made to your database during QA Build system development
To distribute changes to other developers working at other sites on the same QA Build system
See Version Control in the C/C++ Programmer's Reference for information on version control of applications.