Question: The specifications for the attributes ensure that a data entry will be made. a. CHECK b. UNIQUE c. NOT NULL d. ON UPDATE SET NULL

The specifications for the attributes ensure that

The specifications for the attributes ensure that a data entry will be made. a. CHECK b. UNIQUE c. NOT NULL d. ON UPDATE SET NULL a VARCHAR(8) b. NUMBER(8,2) c. NTEGER d. CHAR(8) 3. Eaher one works b. CUSTOMER c. INVOICE d. The answer depends on the minimum cardinality (which instance is reculred in the CUSTOMER-INVOICE relationship)

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