161. What is the full form of SQL?
A. Structured Query Language
B. Structured Query List
C. Simple Query Language
D. None of these

162. Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?
A. Data Definition Language(DDL)
B. Data Manipulation Language(DML)
C. Both of above
D. None

163. Which operator performs pattern matching?
A. BETWEEN operator
B. LIKE operator
C. EXISTS operator
D. None of these

164. What operator tests column for the absence of data?
A. EXISTS operator
B. NOT operator
C. IS NULL operator
D. None of these

165. In SQL, which command(s) is(are) used to change a table’s storage characteristics?
A. ALTER TABLE
B. MODIFY TABLE
C. CHANGE TABLE
D. All of the above

166. In SQL, which of the following is not a data definition language commands?
A. RENAME
B. REVOKE
C. GRANT
D. UPDATE

167. In SQL, which command is used to SELECT only one copy of each set of duplicable rows
A. SELECT DISTINCT
B. SELECT UNIQUE
C. SELECT DIFFERENT
D. All of the above

168. A command that lets you change one or more fields in a record is
A. Insert
B. Modify
C. Look-up
D. All of the these

169. Which of the SQL statements is correct?
A. SELECT Username AND Password FROM Users
B. SELECT Username, Password FROM Users
C. SELECT Username, Password WHERE Username = ‘user1’
D. None of the above

170. The FROM SQL clause is used to…
A. specify what table we are selecting or deleting data FROM
B. specify range for search condition
C. specify search condition
D. None of these