Object oriented database engine system ojadb
2016-08-23
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Object oriented database is the development and application of object-oriented methodology, and it is the concrete realization of object-oriented methodology in the field of database. Based on the principle of database and object-oriented development language, it solves the problem of object persistence in the process of object-oriented development. The emergence of object-oriented database simplifies the coding of persistence layer in object-oriented language. Developers no longer need to use SQL statements to complete the object data persistence and query functions. Compared with the object relational mapping method with the same ability, it does not need to establish the mapping of tables and classes, objects and attributes. Therefore, when the requirements and domain model change, the object-oriented database is used as the business code of persistent development, and there is no need to maintain the mapping. At the same time, the homogeneity of database and business program, that is, both of them are developed with the same object-oriented language, which solves the problem of impedance imbalance between heterogeneous systems when business program communicates with traditional relational database.
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数据库
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ojadb
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