Relational Database Access Layers A Pattern Language The Key Patterns

The Relational Database Access Layer helps you design applications that use relational databases and also reflect the relational calculus at a business object level. Such applications are known as data driven or representational [Mar95]. The systems need not be object-oriented, you may also use a 3GL. Hence, the pattern language passes over mapping inheritance and polymorphism. This paper comprises the framework pattern and the key implementation patterns. The PLoP proceedings [Kel+96b] contain the complete pattern language, including adapters and optimization patterns.