In the relational model, _____ are important because they are used to ensure that each row in a table is uniquely identifiable.
A) relations
B) keys
C) indexes
D) logical structures
Correct Answer:
Verified
Q19: The one-to-many (1:M) relationship is easily implemented
Q20: The order of the rows and columns
Q21: _ are especially useful when you are
Q22: _, also known as RESTRICT, yields values
Q23: When two or more tables share the
Q25: Date attributes contain calendar dates stored in
Q26: A(n) _ join links tables by selecting
Q27: A _ is the primary key of
Q28: A _ contains at least all of
Q29: The CUSTOMER table's primary key is CUS_CODE.
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