Which of the following is not Constraint in SQL?Primary KeyNot NullCheckUnion

Which of the following is not Constraint in SQL? (amazon)Options: Pick one correct answer from belowPrimary KeyNot NullCheckUnion

Which of the following are considered as constraints?Select one or more:a.Checkb.NULLc.NOT NULLd.Unique

What constraint type does the following constraint belong to?"Every table must have a primary key, of which no part can be null."Select one:a.Entity integrityb.Domain integrityc.Semantic integrityd.Referential integrity

Which of the following is NOT a type of SQL constraint? UNIQUEPRIMARY KEYALTERNATE KEYFOREIGN KEY

Which constraint must a primary key adhere to