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

Which among the following is a common technique for inserting rows into a table?

Manually typing each value into the INSERT clause

Using SET operators

Using SELECT clause

None of the above

2 / 20

Which of the following DML commands can be considered to be a hybrid of INSERT and UPDATE in a single statement?

SELECT

INTERSECT

MERGE

INSERT

3 / 20

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

True

False

4 / 20

DDL stands for Data Demonstration Language. True or False?

True

False

5 / 20

_______ is not a transaction management SQL command.

SELECT

COMMIT

SAVEPOINT

ROLLBACK

6 / 20

Which of the following objects can be the data source in a MERGE statement?

A sub-query only

A table or a sub-query

A table only

All of the above

7 / 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

8 / 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

9 / 20

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

DML

DDL

TCL

DCL

10 / 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

11 / 20

Is the following select counts of records command correct?

SELECT COUNT(*) FROM EMPLOYEE_DTL;

Yes

No idea

Partially

12 / 20

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

True

False

13 / 20

Which of the following is a DML command of Oracle?

CREATE

DELETE

ALTER

DROP

14 / 20

What does ACID mean with respect to relational database?

Atomicity, Consistency, Isolation, Durability

Accuracy, Consistency, Isolation, Database

Atomicity, Concurrency, Isolation, Durability

Accuracy, Concurrency, Isolation, Durability

15 / 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

16 / 20

What would be the output of the following command;

INSERT INTO EMPLOYEES (employee_id  , first_name , job_id) VALUES (51003,'BRUCE','CLERK');

It will throw an 'Constraint violated' ORA error

It will insert a new row with 51003 BRUCE CLERK values

It will throw an ORA error as there cannot be another BRUCE who is a CLERK

None of the above

17 / 20

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

Truncate

Purge

Drop

Delete

18 / 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

19 / 20

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

SELECT

CREATE

SAVEPOINT

COMMIT

20 / 20

Oracle raises exception if any of the data contained in the insert statement violates the constraint. 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.