What is a constraint, and why use constraints?

What is a constraint, and why use constraints?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: intellipaat, sql, topic-specific, sql, database

参考答案摘要

SQL constraints are a set of rules applied to a column or table to maintain data integrity. SQL consists of many constraints, which are as follows: DEFAULT: It sets a default value for a column. UNIQU...

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