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JavaScript IndexedDB - Quiz(MCQ)

JavaScript IndexedDB : A sizable object store integrated into the browser is called IndexedDB. Using key-value pairings, the IndexedDB enables you to store the data persistently. Any JavaScript type, such as boolean, number, text, undefined, null, date, regex, object, array, blob, and files, may be used as the value.

A sizable object kept in web browsers is the IndexedDB. Key-value pairs are how the IndexedDB stores data. Any data, both primary and complex, can be used as values.

1 .
IndexedDB is _______.
A)
Java-based object-oriented database
B)
Python-based object-oriented database
C)
JavaScript-based object-oriented database
D)
None of the above

Correct Answer :   JavaScript-based object-oriented database

Explanation : IndexedDB is JavaScript-based object-oriented database.

2 .
Does IndexedDB persistently stores your data?
A)
Yes
B)
No
C)
Can Not Say
D)
None of the above

Correct Answer :   Yes

Explanation : IndexedDB allows you to persistently store data within a user's browser.

3 .
Global limit of storage is also known as ______-.
A)
Core limit
B)
Soft limit
C)
Hard limit
D)
None of the above

Correct Answer :   Soft limit

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

4 .
Operations performed using IndexedDB are done ________.
A)
Asynchronously
B)
Synchronously
C)
Both (A) and (B)
D)
None of the above

Correct Answer :   Asynchronously

Explanation : Operations performed using IndexedDB are done asynchronously.

5 .
IndexedDB is a _______ database.
A)
RDBMS
B)
Network database
C)
Hierarchical database
D)
NoSQL

Correct Answer :   NoSQL

Explanation : IndexedDB is a NoSQL database.

6 .
Does IndexedDB use Structured Query Language?
A)
Yes
B)
No
C)
Can Not Say
D)
None of the above

Correct Answer :   No

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

7 .
Which of the following method in IndexedDB can be employed to build a database?
A)
Db()
B)
New()
C)
Build()
D)
Open()

Correct Answer :   Open()

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

8 .
Group limit of storage is also known as _______.
A)
Core limit
B)
Soft limit
C)
Hard limit
D)
None of the above

Correct Answer :   Hard limit

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

9 .
Storage comes in how many types?
A)
2
B)
3
C)
4
D)
5

Correct Answer :   2

Explanation : Storage comes in two types :

* Persistent
* Temporary

10 .
How many modes are there of transactions?
A)
2
B)
3
C)
4
D)
5

Correct Answer :   3

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

11 .
An ____ is a type of object store that is used to seek up entries in another object store known as the referenced object store.
A)
ID
B)
Rank
C)
Index
D)
Indicator

Correct Answer :   Index

Explaination : 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.

12 .
We use ____ to connect with IndexedDB.
A)
Go
B)
Java
C)
Python
D)
JavaScript

Correct Answer :   JavaScript

Explanation : We use JavaScript to connect with IndexedDB.

13 .
The ____ method can be used to remove a database.
A)
deleteDatabase()
B)
delDatabase()
C)
erasedatabase()
D)
Removedatabase()

Correct Answer :   deleteDatabase()

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

14 .
To close a database, we need to use which of the following function?
A)
IDBDatabase.end()
B)
IDBDatabase.close()
C)
IDBDatabase.finish()
D)
None of the above

Correct Answer :   IDBDatabase.close()

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

15 .
After a transaction is committed or aborted then it is in the ____ state.
A)
Active
B)
Inactive
C)
Finished
D)
Committing

Correct Answer :   Finished

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

16 .
During the commit state, new requests can be made? Yes or No
A)
Yes
B)
No
C)
Can Not Say
D)
None of the above

Correct Answer :   No

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

17 .
The connection is not terminated until all transactions have been completed.
A)
True
B)
False
C)
Can Not Say
D)
None of the above

Correct Answer :   True

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

18 .
A database may have a single object-store.
A)
True
B)
False
C)
Can Not Say
D)
None of the above

Correct Answer :   False

Explanation : A database may have multiple object stores.

19 .
Once all the requests associated with a transaction are completed then it attempts to ______.
A)
Active
B)
Finished
C)
Inactive
D)
Committing

Correct Answer :   Committing

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

20 .
When the transaction is in ______ state, new requests can be made against it.
A)
Active
B)
Inactive
C)
Finished
D)
Committing

Correct Answer :   Active

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

21 .
The ______ method returns all the objects in the object store.
A)
All()
B)
Getall()
C)
Includeall()
D)
None of the above

Correct Answer :   Getall()

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

22 .
IndexedDB's data is stored in ______.
A)
Object path
B)
Object stores
C)
Object repository
D)
None of the above

Correct Answer :   Object stores

Explanation : IndexedDB's data is stored in object stores.

23 .
Which of the following function can be employed to create an object store?
A)
ObjectStore()
B)
openObjectStore()
C)
createObjectStore()
D)
ObjectStoreCreate()

Correct Answer :   createObjectStore()

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

24 .
To destroy the object store, use the ____ method.
A)
delObjectStore()
B)
destroyObjectStore()
C)
deleteObjectStore()
D)
removeObjectStore()

Correct Answer :   deleteObjectStore()

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

25 .
We must open a transaction to conduct any operation in our database.
A)
True
B)
False
C)
Can Not Say
D)
None of the above

Correct Answer :   True

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