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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

Question 1

Which constraint can be defined only at the column level?

A. PRIMARY KEY
B. UNIQUE
C. FOREIGN KEY
D. CHECK
E. NOT NULL

Question 2

Which syntax turns an existing constraint on?

A. ALTER TABLE table_name
TURN ON CONSTRAINT constraint_name;
B. ALTER TABLE table_name
STATUS = ENABLE CONSTRAINT constraint_name;
C. ALTER TABLE table_name
ENABLE CONSTRAINT constraint_name;
D. ALTER TABLE table_name
TURN ON CONSTRAINT constraint_name;
E. ALTER TABLE table_name
ENABLE constraint_name;
F. ALTER TABLE table_name
STATUS ENABLE CONSTRAINT constraint_name;

Question 3

Examine the structure of the EMPLOYEES table:
EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER\ SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the
DEPARTMENTS table
You created a sequence called EMP_ID_SEQ in order to populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table.
Which two statements regarding the EMP_ID_SEQ sequence are true? (Choose two.)

A. The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.
B. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.
C. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.
D. You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.
E. Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.
F. The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.

Question 4

Evaluate this SQL statement:
SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME
FROM EMP e, DEPARTMENT d
WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID;
In the statement, which capabilities of a SELECT statement are performed?

A. Selection, projection, join
B. Difference, projection, join
C. Difference, projection, product
D. Selection, intersection, join
E. Intersection, projection, join

Question 5

You would like to display the system date in the format "Monday, 01 June, 2001".
Which SELECT statement should you use?

A. SELECT TO_DATE(SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;
B. SELECT TO_DATE(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
C. SELECT TO_CHAR(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
D. SELECT TO_CHAR(SYSDATE, 'FMDD, DY Month, 'YYYY') FROM dual;
E. SELECT TO_CHAR(SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;

Solutions: