In relational databases, data is stored on tables created with a certain model and relationship network. Especially in systems that are not fully mature yet, changes in data models occur frequently and they make it difficult to control data and data models in terms of integrity, consistency, and granularity. This necessitates control mechanisms that will work on the basis of changes made to the data model and a catalog mechanism.

The control mechanisms mentioned above should not block the development processes, but should also prevent the data model from turning into “garbage.” In this respect, the data model (table names, existence of related tables and their compatibility with each other, consistency of related tables in terms of columns, etc.) should be considered in the planning to be made.