Workshop on OODB implementation
OOPSLA '87 Addendum to the proceedings on Object-oriented programming systems, languages and applications (Addendum)
Design patterns: elements of reusable object-oriented software
Design patterns: elements of reusable object-oriented software
Object-oriented modeling and design for database applications
Object-oriented modeling and design for database applications
Patterns of Enterprise Application Architecture
Patterns of Enterprise Application Architecture
Extracting an Entity Relationship Schema from a Relational Database through Reverse Engineering
ER '94 Proceedings of the13th International Conference on the Entity-Relationship Approach
Data Access Patterns: Database Interactions in Object-Oriented Applications
Data Access Patterns: Database Interactions in Object-Oriented Applications
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Enterprise information systems distinguish the Domain layer that handles the major business logic of an application, from the Data (Persistent) layer that handles storage concerns alone. The integration of these layers is not straightforward since usually the requirement is for partial persistency, i.e., persistency is required only for a subset of the Domain layer classes. Industry tools provide partial help by supporting convenient abstractions on top of concrete database systems. Nevertheless, the developer still has to design the concrete ties between the layers. Full automation can be a great improvement in complex system development, and goes along with the Model Driven Engineering approach. In this paper we introduce a set of independent Data Access Patterns that provide the missing link towards full automation of the Domain-Data layer interaction. Each pattern is a simple refactoring that yields some Data Access layer constructs, and relies on local information in the Domain layer. All patterns are Domain layer transparent, i.e., their application leaves the Domain layer intact. We provide an algorithm for combined pattern application and show its correctness. An implementation of our method is on the way.