Which of the following are considered as constraints?Select one or more:a.Checkb.NULLc.NOT NULLd.Unique
Question
Which of the following are considered as constraints?Select one or more:a.Checkb.NULLc.NOT NULLd.Unique
Solution
The options that are considered as constraints are:
b. NULL c. NOT NULL d. Unique
These are all types of constraints in SQL (Structured Query Language) used to specify rules for the data in a table.
a. Check is also a constraint in SQL, but it's not listed in the options.
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