Rule based compatibility module

A rule based compatibility module, comprising:

• instances that depend on operational environments of the compatibility module;
• and
• database contexts, wherein each database context is created specific to a particular operational environment, and wherein each database context comprises:
• databases that interact with a client program;
• and
• rules capable of being loaded into the database context to test compatibility of the databases.

A computer readable medium providing instructions for testing compatibility in a database system, the instructions comprising:

• obtaining an instance of a compatibility module, wherein the instance depends on an operational environment of the compatibility module;
• obtaining rules capable of testing compatibility of databases;
• evaluating the rules, wherein the evaluation of the rules returns a value of “true” or “false”;
• executing a conditional application code by a client program if the evaluation of the rules returns a value of “true”;
• and
• executing a different conditional application code by the client program if the evaluation of the rules returns a value of “false”.