What is the purpose of the primary key?
A. to uniquely identify each record in a table
B. to uniquely identify each table in a database
C. to create a relationship between two tables in a database
D. to create a relationship for queries in a database
Answer: A
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a. protection b. system services c. both A and B d. neither A nor B
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Fill in the blank(s) with the appropriate word(s).
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Indicate whether the statement is true or false