Entity integrity Archives

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How does SQL allow implementation of the entity integrity and referential integrity constraints described in Chapter 3?

Posted on January 26, 2023 by Shady

Basic SQL 6.1. How do the relations (tables) in SQL differ from the relations defined formally in Chapter 3? Discuss the other differences in terminology. Why does SQL allow duplicate tuples in a table or in a query result? 6.2. List the data types that are allowed for SQL attributes. 6.3. How does SQL allow […]

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