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Chapter 4: Intermediate SQL: Transactions, Integrity Constraints and Authorization

Chapter 4: Intermediate SQL: Transactions, Integrity Constraints and Authorization. Transactions. Unit of work Atomic transaction either fully executed or rolled back as if it never occurred Isolation from concurrent transactions Transactions begin implicitly

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Chapter 4: Intermediate SQL: Integrity Constraints and Authorization

Chapter 4: Intermediate SQL: Integrity Constraints and Authorization. Integrity Constraints. Integrity constraints guard against accidental damage to the database, by ensuring that authorized changes to the database do not result in a loss of data consistency.

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Id varchar 8 - PowerPoint PPT Presentation

Chapter 4: Intermediate SQL: Transactions, Integrity Constraints and Authorization

Chapter 4: Intermediate SQL: Integrity Constraints and Authorization