Describe three ways that a default value can be assigned

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Reference no: EM131218989

a. Explain why primary keys may never be null, but alternate keys can be null.

b. List five generic data types.

c. Describe three ways that a default value can be assigned.

d. What is a domain constraint? Give an example.

e. What is a range constraint? Give an example.

Reference no: EM131218989

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