Oracle Database SQL 12c 1z0-071 Exam Practice Test 1

Question : 17 of 50

Marks: +1, -0

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(2) CONSTRAINT emp_mgr_fk REFERENCES emp(emp_no)); 
 
  ALTER TABLE emp 
 DISABLE CONSTRAINT emp_emp_no_pk CASCADE; 
  
 ALTER TABLE emp 
 ENABLE CONSTRAINT emp_emp_no_pk;

What would be the status of the foreign key EMP_MGR_PK?

It would remain disabled and can be enabled only by dropping the foreign key constraint and recreating it
It would remain disabled and has to be enabled manually using the ALTER TABLE command.
It would be automatically enabled and immediate.
It would be automatically enabled and deferred.

Validate

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