Tag: databases

Questions Related to databases

Which of the following options would be queried to get the descriptions of all tablespaces?

  1. USER_TABLESPACES

  2. V$TABLESPACE

  3. DBA_TABLESPACE_GROUPS

  4. DBA_TABLESPACES


Correct Option: D
  1. Statement failure

  2. User process failure

  3. Network failure

  4. Instance failure


Correct Option: B
  1. The tablespace must be offline

  2. The tablespace must be online

  3. The tablespace cannot have active segments

  4. The administrator NOT needs the correct system privilege


Correct Option: C

Which names are NOT appropriate database object names?

  1. "SELECT"

  2. "_Marketing"

  3. m364DaYs

  4. SELECT


Correct Option: D
  1. SELECT last_name FROM employees WHERE last_name LIKE '%A_B%' ESCAPE '\';

  2. SELECT last_name FROM employees WHERE last_name LIKE '%A_B%' ESCAPE;

  3. SELECT last_name FROM employees WHERE last_name LIKE 'A_B%' ESCAPE '%';

  4. SELECT last_name FROM employees WHERE last_name LIKE '%A_B%' ESCAPE '\';


Correct Option: D

15 Examine the description of the STUDENTS table: STD_ID NUMBER (4) COURSE_ID VARCHAR2 (10) START_DATE DATE END_DATE DATE Which two aggregate functions are valid on the START_DATE column? (Choose two)

  1. SUM(start_date)

  2. AVG(start_date)

  3. COUNT(start_date)

  4. MIN(start_date)


Correct Option: C,D
  1. SELECT TO_DATE (SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;

  2. SELECT TO_CHAR (SYSDATE, 'FMDD, DY Month, YYYY') FROM dual;

  3. SELECT TO_CHAR (SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;

  4. SELECT TO_CHAR (SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;


Correct Option: C
  1. DELETE employees;

  2. DESCRIBE employees;

  3. ROLLBACK TO SAVEPOINT C;

  4. ALTER TABLE employees SET UNUSED COLUMN sal;

  5. GRANT SELECT ON employees TO SCOTT;


Correct Option: C,D