The general design objectives of the logical data model are correctness, consistency, non-redundancy and simplicity.
逻辑数据模型的一般设计目标是正确性、一致性、非冗余和简单性。
The core problem of the real-time database system is to ensure the consistency of data and the correctness of events, which are related to time.
实时数据库的核心问题是事务的处理既要确保数据的一致性，又要保证事务的正确性，而它们都与定时相关联。
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