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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. You are the DBA for an academic database. You need to create a role that allows a group of users to modify existing rows in the STUDENT_GRADES table.
Which set of statements accomplishes this?

A) CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT ROLE registrar to user1, user2, user3
B) CREATE ROLE registrar; GRANT MODIFY ON student_grades TO registrar; GRANT registrar to user1, user2, user3
C) CREATE NEW ROLE registrar; GRANT ALL ON student_grades TO registrar; GRANT registrar to user1, user2, user3
D) CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT registrar to user1, user2, user3;
E) CREATE registrar; GRANT CHANGE ON student_grades TO registrar; GRANT registrar;

2. What are two reasons to create synonyms? (Choose two.)

A) Your tables have difficult names.
B) You want to work on your own tables.
C) You want to use another schema's tables.
D) Your tables names are too long.
E) You have too many tables.
F) You have too many columns in your tables.

3. You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty.
Which statement accomplishes this task?

A) ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
B) ALTER TABLE students ADD PRIMARY KEY student_id;
C) ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);
D) ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;
E) ALTER TABLE studentsMODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);

4. Which SQL statement displays the date March 19, 2001 in a format that appears as "Nineteenth of March 2001 12:00:00 AM"?

A) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY), 'fmDdspth "of" Month YYYYfmtHH:HI:SS AM') NEW_DATE FROM dual;
B) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;
C) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY HH:MI:SS AM') NEW_DATE FROM dual;
D) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'Ddspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;

5. You need to calculate the total of all salaries in the accounting department. Which group function should you use?

A) SUM
B) LARGEST
C) MIN
D) COUNT
E) TOTAL
F) MAX

Solutions: