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The SQL keyword(s)________ mean(s)that a value must be supplied before a new row can be created.
Q6: The authors recommend using which of the
Q11: Which of the following is a component
Q12: In the general division of labor between
Q27: Which symbol is used in standard SQL
Q31: Briefly explain the strategy of two-phased locking.
Q35: SQL triggers are used for _.<br>A)validity checking<br>B)providing
Q41: Microsoft Access does not create N:M relationships
Q44: In the relational model,each row of a
Q67: Distinguish between an entity class and an
Q74: What is an association relationship,and how does