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What is constraint? Explain types of constraints. OR What are integrity constraints? Explain various types of integrity constraints with suitable example.
- What is constraint? Explain types of constraints.
- OR
- What are integrity constraints? Explain various types of integrity constraints with suitable example.
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Not Null constraint A null value indicates not applicable missing or not known A null value is distinct from zero or blank space A column defined as a not null cannot have a null value Such a column b...
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Modern Database Management
Authors: Jeff Hoffer, Ramesh Venkataraman, Heikki Topi
12th edition
133544613, 978-0133544619
