浅谈数据库中的完整性约束

摘要

Data integrity refers to data accuracy, completeness and consistency of the database is a measure of the quality standards of good and bad.In this paper, the following three aspects of data integrity.That entity integrity, referential integrity, and user-defined integrity.%数据完整性是指数据的正确性、完备性和一致性，是衡量数据库质量好坏的标准。本文从以下三个方面分析了数据的完整性。即实体完整性、参照完整性和用户自定义完整性。