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NEW QUESTION 24
Examine this statement which executes successfully:
Which statement will violate the CHECK constraint?

  • A. DELETE FROM emp80
    WHERE department_id=90;
  • B. SELECT *
    FROM emp80
    WHERE department_id=80;
  • C. UPDATE emp80
    SET department_id=90
    WHERE department_id=80;
  • D. SELECT *
    FROM emp80
    WHERE department_id=90;

Answer: C

 

NEW QUESTION 25
Which two will execute successfully?

  • A. SELECT COALESCE('DATE',SYSDATE) FROM (SELECT NULL AS "DATE" FROM DUAL) ;
  • B. SELECT NVL('DATE',SYSDATE) FROM DUAL;
  • C. SELECT NVL('DATE',200) FROM (SELECT NULL AS "DATE" FROM DUAL);
  • D. SELECT COALESCE(O,SYSDATE) TRCH DUAL;
  • E. SELECT COALESCR('DATE', SYSDATE) FROM DUAL;

Answer: B,C

 

NEW QUESTION 26
Examine the structure of the MARKS table:
1z0-071-4d8ffc9516b461ef08fbfe91e162f2f1.jpg
Which two statements would execute successfully? (Choose two.)

  • A. SELECT SUM(subject1+subject2+subject3)FROM marksWHERE student_name IS NULL;
  • B. SELECT student_name,SUM(subject1)FROM marksWHERE student_name LIKE 'R%';
  • C. SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subject1)FROM marksWHERE
    subject1 > subject2;
  • D. SELECT student_name subject1FROM marksWHERE subject1 > AVG(subject1);

Answer: A,C

 

NEW QUESTION 27
Which two queries return the string Hello! we're ready?

  • A. SELECT q'[Hello! We're ready]'FROM DUAL;
  • B. SELECT 'Hello! We're ready' FROM DUAL;
  • C. SELECT 'Hello! we\ re ready' ESCAPE'N'FROMDUAL:
  • D. SELECT q'! Hello! We're ready! 'FROM DUAL;
  • E. SELECT "Hello! We're ready "FROM |DUAL;

Answer: A,D

 

NEW QUESTION 28
You executed the following CREATE TABLE statement that resulted in an error:
SQL> CREATE TABLE employees(emp_id NUMBER(10) PRIMARY KEY, ename VARCHAR2(20), email NUMBER(3) UNIQUE, address VARCHAR2(500), phone VARCHAR2(20), resume LONG, hire_date DATE, remarks LONG, dept_id NUMBER(3) CONSTRAINT emp_dept_id_fk REFERENCES departments (dept_id), CONSTRAINT ename_nn NOY NULL(ename)); Identify two reasons for the error.

  • A. Only one LONGcolumn can be used per table
  • B. The FOREIGN KEYkeyword is missing in the constraint definition
  • C. The NOT NULLconstraint on the ENAMEcolumn must be defined as the column level
  • D. The PRIMARY KEYconstraint in the EMP_IDcolumn must have a name and must be defined at the table level only
  • E. FOREIGN KEYdefined on the DEPT_IDcolumn must be at the table level only

Answer: A,C

 

NEW QUESTION 29
......

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