Composition in Object-Relational Database
نویسندگان
چکیده
Object-Relational Database (ORDB) is increasingly popular as the database storage. Its popularity is based on its ability to capture the object-oriented modeling semantic and the maturity of relational implementation. Many works have proposed the design method for ORDB. The design includes different data structures and relationships. One type of relationship is composition. It is not the same as aggregation. While aggregation is identified as a relationship in which a composite object (“whole”) consists of other component objects (“parts”) (Rumbaugh et al., 1991), composition has two additional constraints mentioned below.
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