TENESSEE ORACLE DATABASE CERTIFIED
ASSOCIATE QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES Q&A
2026|INSTANT DOWNLOAD PDF
1. Which of the following is the default tablespace for a new
user in Oracle Database?
A. USERS
B. SYSTEM
C. TEMP
D. SYSAUX
Rationale: The default tablespace is where user objects are
stored unless specified otherwise.
Answer: A. USERS
2. Which SQL statement is used to remove all rows from a
table without logging individual row deletions?
A. DELETE
B. DROP
C. TRUNCATE
D. REMOVE
,Rationale: TRUNCATE is faster and does not generate undo logs
for each row.
Answer: C. TRUNCATE
3. Which of the following data types is used to store variable-
length character data in Oracle?
A. CHAR
B. VARCHAR2
C. NCHAR
D. NVARCHAR2
Rationale: VARCHAR2 allows storing variable-length character
strings efficiently.
Answer: B. VARCHAR2
4. Which clause in SQL is used to filter rows returned by a
query?
A. SELECT
B. WHERE
C. GROUP BY
D. HAVING
Rationale: The WHERE clause filters rows based on a condition
before grouping or aggregation.
Answer: B. WHERE
, 5. What is the purpose of the Oracle Data Dictionary?
A. Stores user data
B. Stores metadata about database objects
C. Manages backup and recovery
D. Optimizes SQL queries
Rationale: The data dictionary maintains information about
database structure, users, privileges, and objects.
Answer: B. Stores metadata about database objects
6. Which type of join returns all rows from both tables where
there is a match, and unmatched rows are filled with NULLs?
A. INNER JOIN
B. LEFT JOIN
C. RIGHT JOIN
D. FULL OUTER JOIN
Rationale: A FULL OUTER JOIN returns matched rows and
includes unmatched rows from both tables with NULLs.
Answer: D. FULL OUTER JOIN
7. What is the default port number for Oracle Database
listener?
A. 1521
B. 1433
ASSOCIATE QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES Q&A
2026|INSTANT DOWNLOAD PDF
1. Which of the following is the default tablespace for a new
user in Oracle Database?
A. USERS
B. SYSTEM
C. TEMP
D. SYSAUX
Rationale: The default tablespace is where user objects are
stored unless specified otherwise.
Answer: A. USERS
2. Which SQL statement is used to remove all rows from a
table without logging individual row deletions?
A. DELETE
B. DROP
C. TRUNCATE
D. REMOVE
,Rationale: TRUNCATE is faster and does not generate undo logs
for each row.
Answer: C. TRUNCATE
3. Which of the following data types is used to store variable-
length character data in Oracle?
A. CHAR
B. VARCHAR2
C. NCHAR
D. NVARCHAR2
Rationale: VARCHAR2 allows storing variable-length character
strings efficiently.
Answer: B. VARCHAR2
4. Which clause in SQL is used to filter rows returned by a
query?
A. SELECT
B. WHERE
C. GROUP BY
D. HAVING
Rationale: The WHERE clause filters rows based on a condition
before grouping or aggregation.
Answer: B. WHERE
, 5. What is the purpose of the Oracle Data Dictionary?
A. Stores user data
B. Stores metadata about database objects
C. Manages backup and recovery
D. Optimizes SQL queries
Rationale: The data dictionary maintains information about
database structure, users, privileges, and objects.
Answer: B. Stores metadata about database objects
6. Which type of join returns all rows from both tables where
there is a match, and unmatched rows are filled with NULLs?
A. INNER JOIN
B. LEFT JOIN
C. RIGHT JOIN
D. FULL OUTER JOIN
Rationale: A FULL OUTER JOIN returns matched rows and
includes unmatched rows from both tables with NULLs.
Answer: D. FULL OUTER JOIN
7. What is the default port number for Oracle Database
listener?
A. 1521
B. 1433
