JavaScript IndexedDB MCQs (Multiple-Choice Questions)

The IndexedDB is also known as the Indexed Database API which is a JavaScript application programming interface. JavaScript IndexedDB is provided by web browsers to manage a NoSQL database of JSON objects.

JavaScript IndexedDB MCQs

JavaScript IndexedDB MCQs: This section contains multiple-choice questions and answers on the various topics of JavaScript IndexedDB. Practice these MCQs to test and enhance your skills on JavaScript IndexedDB.

List of JavaScript IndexedDB Multiple-choice Questions and Answers

1. IndexedDB is ____.

1. Java-based object-oriented database
2. Python-based object-oriented database
3. JavaScript-based object-oriented database

Answer: C) JavaScript-based object-oriented database

Explanation:

IndexedDB is JavaScript-based object-oriented database.

2. Operations performed using IndexedDB are done ____.

1. Asynchronously
2. Synchronously

Answer: A) Asynchronously

Explanation:

Operations performed using IndexedDB are done asynchronously.

3. IndexedDB is a ____ database.

1. RDBMS
2. Network database
3. Hierarchical database
4. NoSQL

Answer: D) NoSQL

Explanation:

IndexedDB is a NoSQL database.

4. Does IndexedDB use Structured Query Language?

1. Yes
2. No

Answer: B) No

Explanation:

IndexedDB does not employ Structured Query Language Because IndexedDB is a NoSQL database, it does not employ SQL.

5. Which of the following method in IndexedDB can be employed to build a database?

1. Build()
2. New()
3. Db()
4. Open()

Answer: D) Open()

Explanation:

The open() method in IndexedDB can be employed to build a database.

6. We use ____ to connect with IndexedDB.

1. Python
2. Java
3. JavaScript
4. Go

Answer: C) JavaScript

Explanation:

We use JavaScript to connect with IndexedDB.

7. The ____ method can be used to remove a database.

1. deleteDatabase()
2. Removedatabase()
3. delDatabase()
4. erasedatabase()

Answer: A) deleteDatabase()

Explanation:

The deleteDatabase() method can be used to remove a database.

8. To close a database, we need to use which of the following function?

1. IDBDatabase.end()
2. IDBDatabase.close()
3. IDBDatabase.finish()

Answer: B) IDBDatabase.close()

Explanation:

To close a database we need to use the function IDBDatabase.close()

9. The connection is not terminated until all transactions have been completed.

1. True
2. False

Answer: A) True

Explanation:

The connection is not terminated until all transactions have been completed.

10. A database may have a single object-store.

1. True
2. False

Answer: B) False

Explanation:

A database may have multiple object stores.

11. IndexedDB’s data is stored in ____.

1. Object path
2. Object stores
3. Object repository

Answer: B) Object stores

Explanation:

IndexedDB’s data is stored in object stores.

12. Which of the following function can be employed to create an object store?

1. ObjectStore()
2. openObjectStore()
3. createObjectStore()
4. ObjectStoreCreate()

Answer: C) createObjectStore()

Explanation:

The createObjectStore() function can be employed to create an object store.

13. To destroy the object store, use the ____ method.

1. destroyObjectStore()
2. delObjectStore()
3. removeObjectStore()
4. deleteObjectStore()

Answer: D) deleteObjectStore()

Explanation:

To destroy the object store, use the deleteObjectStore() method.

14. We must open a transaction to conduct any operation in our database.

1. True
2. False

Answer: A) True

Explanation:

We must open a transaction to conduct any operation in our database.

15. The ____ method returns all the objects in the object store.

1. All()
2. Getall()
3. Includeall()

Answer: B) Getall()

Explanation:

The getall() method returns all the objects in the object store.

16. When the transaction is in ____ state, new requests can be made against it.

1. Active
2. Inactive
3. Committing
4. Finished

Answer: A) Active

Explanation:

When the transaction is in an active state, new requests can be made against it.

17. Once all the requests associated with a transaction are completed then it attempts to ____.

1. Active
2. Inactive
3. Committing
4. Finished

Answer: C) Committing

Explanation:

Once all the requests associated with a transaction are completed then it attempts to commit.

18. During the commit state, new requests can be made? Yes or No

1. Yes
2. No

Answer: B) No

Explanation:

During the commit state, no new requests can be made.

19. After a transaction is committed or aborted then it is in the ____ state.

1. Active
2. Inactive
3. Committing
4. Finished

Answer: D) Finished

Explanation:

After a transaction is committed or aborted then it is in the finished state.

20. An ____ is a type of object store that is used to seek up entries in another object store known as the referenced object store.

1. Rank
2. ID
3. Index
4. Indicator

Answer: C) Index

Explanation:

An index is a type of object store that is used to seek up entries in another object store known as the referenced object store.

21. How many modes are there of transactions?

1. 5
2. 4
3. 2
4. 3

Answer: D) 3

Explanation:

The three modes of transactions are: readwrite, readonly, and versionchange.

22. Storage comes in how many types?

1. 5
2. 4
3. 3
4. 2

Answer: D) 2

Explanation:

Storage comes in two types:

• Persistent
• Temporary

23. Group limit of storage is also known as ____.

1. Hard limit
2. Core limit
3. Soft limit

Answer: A) Hard limit

Explanation:

The group limit of storage is also known as the Hard limit.

24. Global limit of storage is also known as ____.

1. Hard limit
2. Core limit
3. Soft limit

Answer: C) Soft limit

Explanation:

Global limit of storage is also known as a soft limit.

25. Does IndexedDB persistently stores your data?

1. Yes
2. No

Answer: A) Yes

Explanation:

IndexedDB allows you to persistently store data within a user’s browser.