Understanding Oracle Data Manipulation – Intermediate-Level Quiz

Oracle Data Manipulation Quiz

Test your skills in Oracle SQL as you tackle questions on inserting, updating, deleting, and querying data. This quiz is perfect for both beginners and experienced users looking to refresh their knowledge. Get ready to enhance your understanding of data manipulation in Oracle. Good luck!

1 / 20

The TRUNCATE command deletes all the rows in one command. True or False?

True

False

2 / 20

______ is used to store, retrieve, modify, delete, insert, and data in a database.

DML

DDL

TCL

DCL

3 / 20

Which of the following is a DML command of Oracle?

CREATE

DELETE

ALTER

DROP

4 / 20

What is true about the UPDATE command?

It can update unlimited rows at a time in bulk

It can update only one row at a time

It can update only 100 rows at a time

None of the above

5 / 20

What among the following is true about the DELETE statement?

It is not mandatory to write a WHERE clause with the DELETE statement

DELETE can remove data from multiple tables at a time

The DELETE statement has to be accompanied by the WHERE clause

None of the above

6 / 20

Oracle raises exception if any of the data contained in the insert statement violates the constraint. True or False?

True

False

7 / 20

_______ is not a transaction management SQL command.

SELECT

COMMIT

SAVEPOINT

ROLLBACK

8 / 20

What will happen if the following statement is executed;

DELETE FROM employees where department_id  = &deptID;
COMMIT;

It will prompt for the department ID but transaction cannot be committed

It will raise error because DML statements cannot use substitution variables

It will prompt for the department ID to be deleted from the user and delete the record with the given department ID

None of the above

9 / 20

What is the difference between the UPSERT and MERGE statements?

UPSERT is the latest term adopted for MERGE statement, which has turned obsolete

MERGE does INSERT, UPDATE and DELETE, UPSERT does only UPDATE and INSERT

UPSERT is the latest term adopted for MERGE statement, which has turned obsolete

There is no difference

10 / 20

Which of the following best defines a transaction?

A transaction consists of either a collection of DML statements or a DDL or DCL or TCL statement to form a logical unit of work in a database session

A transaction consists of DDL statements on the database schema

A transaction consists of collection of DML and DDL statements in different sessions of the database

A transaction consists of COMMIT or ROLLBACK in a database session

11 / 20

Is the following select counts of records command correct?

SELECT COUNT(*) FROM EMPLOYEE_DTL;

Yes

No idea

Partially

12 / 20

Which of the following commands / statements would end a transaction?

SELECT

CREATE

SAVEPOINT

COMMIT

13 / 20

Which of the following commands prevents other users from making changes to a table?

PROTECT TABLE

LOCK TABLE

SAVE POINT

ROLL BACK

14 / 20

The _____ SQL command is used to delete a table from a database.

Truncate

Purge

Drop

Delete

15 / 20

What is the highest level of data abstraction in the database management system?

Physical level

Sub level

View level

Logical level

16 / 20

Delete statements are used to delete records with and without conditions. True or False?

True

False

17 / 20

TCL is used to manage transactions in a database. True or False?

True

False

18 / 20

Which of the following columns in a table are not usually updated?

LOB columns in the table

A primary key column which also serves as foreign key reference in another table

Which of the following columns in a table are not usually updated?

All of the above

19 / 20

The ALTER command is used to alter the structure of a database. True or False?

True

False

20 / 20

DDL stands for Data Demonstration Language. True or False?

True

False

Your score is

The average score is 0%

Oracle Data Manipulation involves performing operations to retrieve, insert, update, and delete data within Oracle databases. It focuses on the use of SQL Data Manipulation Language (DML) commands like SELECT, INSERT, UPDATE, and DELETE.

This topic also covers filtering, sorting, and aggregating data to effectively manage and analyze database content.

This Oracle Data Manipulation quiz is designed for database developers, DBAs, and beginners to learn and apply SQL commands for managing data.