Một hướng tiếp cận cơ sở dữ liệu hướng đối tượng
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Abstract
In recent decades, the relational database model has made significant progress on databases. Along with rapid development of information technology, relational database has also encountered problems related to storing complex objects. Meanwhile, objectoriented database (OODB) could overcome these difficulties in processing and storing complex objects in the real world. But OODB has been meeting its own challenges, including a lack of the official norm accepted by ANSI or ISO like relational model; the theoretical basic of OODB has also continuously been researching and developing. Key problems in database such as normalization of OODB, theory of constraint and integrity are challenging scientists of information technology. The paper aims at researching an approach to normalization of OODB based on the concepts of path-dependent constraints in the object model suggested by Tari, Stokes and Spaccapietra [14].
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References
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