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  • homework5-3

    Database is a computer software system that stores and manages data according to data structure. The concept of database actually includes two meanings: (1) A database is an entity. It is a "warehouse" capable of reasonably keeping data. Users store transaction data to be managed in the "warehouse". The two concepts of "data" and "library" are combined into a database. (2) Database is a new method and technology of data management. It can organize data more appropriately, maintain data m


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