Object-oriented databases and relational databases are popular for handling complex real-world entities. Object-Oriented Databases (OODBs) are used for large programming projects, where each record is represented by an object. Relational databases organize data in tables with records containing the same fields. This paper discusses the strengths and weaknesses of both database models, focusing on constraints in object-oriented and relational databases. The goal is to understand the performance interoperability between the two types of databases.