Chapter 14. Maintaining Data Integrity

Terms you'll need to understand:

Concepts you'll need to master:

  • Implement data integrity constraints.

  • Maintain data integrity constraints.

  • Obtain constraint information from the data dictionary.

Data integrity generally refers to the validity of data. Data integrity can be compromised in many different ways. Errors can be introduced when the data is entered or whenever the data is transmitted from one computer to another. Integrity can be compromised by software bugs, viruses, hardware malfunctions, or disk crashes. The introduction of invalid data can occur whenever a certain set of circumstances come together to create just the right conditions ...

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