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047-061
61. Evaluate the following SQL statements that are issued in the given order:CREATE TABLE emp(emp_no NUMBER(2) CONSTRAINT emp_emp_no_pk PRIMARY KEY,ename VARCHAR2(15),salary NUMBER(8,2),mgr_no NUMBER(...
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047-114
114. Which statements are true? (Choose all that apply.)A. The data dictionary is created and maintained by the databaseadministrator.B. The data dictionary views can consist of joins of dictionary ba...
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047-120
120. Which two statements are true regarding constraints? (Choose two.)A. A foreign key cannot contain NULL values.B. A column with the UNIQUE constraint can contain NULL.C. A constraint is enforced o...
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