The development and mainteinance of modern software in organizations requires the use of Object-Oriented Programming Languages (OOPL) and different persistence mechanisms,
mainly Relational Databases (RDB). In fact, some APIs have been constructed with the purpose of integrating OOPL with RDB. These APIs, however, must be properly used in
order not to lose the benefits of object-orientation. This work presents a proposal for using those APIs to integrate the JavaTM programming language with RDB.The proposed
integration follows object-oriented principles, contributing to obtain reuse and exensibility, and minimizing the impact on efficiency.