| 摘要 |
When an object in a primary memory based data base is accessed by a user, there is created in the user process an agent object that contains a reference to the real object and appears as if it were the real object. All accesses to the data of the object are performed by reading directly, via the reference in the agent object, in the memory of the storage manager. The data accesses are performed via a generic interface in the form of read and write operations towards attributes.
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