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Column constraint - PowerPoint PPT Presentation

CS 252: Fundamentals of Relational Databases: SQL2

CS 252: Fundamentals of Relational Databases: SQL2. Dr. Alexandra I. Cristea http://www.dcs.warwick.ac.uk/~acristea/. Interim Summary. Material covered so far: Everything for data stored in one table. Creating base tables without constraints. Inserting rows and partial rows, NULL.

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420 views • 36 slides

Including Constraints

Including Constraints. Objectives. After completing this lesson, you should be able to do the following: Describe constraints Create and maintain constraints. What Are Constraints?. Constraints enforce rules at the table level.

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424 views • 28 slides

Including Constraints

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288 views • 28 slides

Including Constraints

Including Constraints. Objectives. At the end of this lesson, you will be able to: Describe constraints Create and maintain constraints. What Are Constraints?. Constraints enforce rules at the table level. Constraints prevent the deletion of a table if there are dependencies.

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469 views • 25 slides

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Column constraint - PowerPoint PPT Presentation

CS 252: Fundamentals of Relational Databases: SQL2

Including Constraints

Including Constraints

Including Constraints