Top 80 OrientDB Multiple Choice Questions (MCQs) with Answers

1 .

What is OrientDB?

A)

A document database

B)

A NoSQL graph database

C)

A key-value store

D)

A relational database management system

Correct Answer : A NoSQL graph database

Explanation : OrientDB is the first Multi-Model Open Source NoSQL DBMS that combines the power of graphs and the flexibility of documents into one scalable, high-performance operational database.

2 .

Which language is used to query OrientDB?

A)

SQL

B)

SPARQL

C)

Cypher

D)

Gremlin

Correct Answer : SQL

Explanation : OrientDB supports an SQL-like query language called OrientSQL, which allows users to retrieve data from the database. However, it also supports other query languages such as Gremlin, Cypher, and SPARQL.

3 .

Which of the following is the first Multi-Model Open Source NoSQL DBMS?

A)

Db2

B)

Tiny DB

C)

Orient DB

D)

Apache Derby

Correct Answer : Orient DB

Explanation : Orient DB is the first Multi-Model Open Source NoSQL DBMS.

4 .

Orient DB is written in which of the following programming languages?

A)

C

B)

Java

C)

Ruby

D)

Erlang

Correct Answer : Java

Explanation : Orient DB is written in Java.

5 .

What is the storage engine used in OrientDB?

A)

B-tree

B)

LSM-trie

C)

LSM-tree

D)

LSM-tree with tiered compaction

Correct Answer : LSM-tree with tiered compaction

Explanation : OrientDB uses LSM-tree (Log-Structured Merge Tree) with tiered compaction as its storage engine. It is a highly optimized and scalable data structure that allows for efficient storage and retrieval of data.

6 .

Orient DB is available in how many editions?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : Orient DB is available in 2 editions :

* Community edition
* Enterprise edition

7 .

Which of the following is the default console mode in OrientDB?

A)

Batch Mode

B)

Serial Mode

C)

Interactive Mode

D)

None of the above

Correct Answer : Interactive Mode

Explanation : The default console mode in OrientDB is interactive.

8 .

Which of the following is not a supported data type in OrientDB?

A)

Date

B)

Float

C)

Integer

D)

Timestamp with time zone

Correct Answer : Timestamp with time zone

Explanation : OrientDB does not support the data type “Timestamp with time zone”. However, it supports other data types such as Integer, Float, Date, and Time.

9 .

Are Classes the same as Tables in an OrientDB?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : No

Explanation : No, classes are not the same.

10 .

The ____ is a software component that connects to and interacts with the OrientDB database.

A)

OrientDB driver

B)

OrientDB server

C)

OrientDB Client

D)

OrientDB connector

Correct Answer : OrientDB driver

Explanation : The OrientDB driver is a software component that connects to and interacts with the OrientDB database.

11 .

The ____ is a software component that connects to and interacts with the OrientDB server.

A)

OrientDB driver

B)

OrientDB Client

C)

OrientDB server

D)

OrientDB connector

Correct Answer : OrientDB Client

Explanation : The OrientDB client is a software component that connects to and interacts with the OrientDB server.

12 .

The ____ is a piece of software that allows other software to connect to and interact with the OrientDB database.

A)

OrientDB driver

B)

OrientDB server

C)

OrientDB Client

D)

OrientDB connector

Correct Answer : OrientDB connector

Explanation : The OrientDB connector is a piece of software that allows other software to connect to and interact with the OrientDB database.

13 .

A ____ is the smallest unit that may be loaded from and placed into the database.

A)

Log

B)

Session

C)

Record

D)

None of the above

Correct Answer : Record

Explanation : A Record is the smallest unit that may be loaded from and placed into the database.

14 .

In how many types of records are gathered?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 4

Explanation : Records come in four types:

* Documents
* Blobs
* Vertices
* Edges

15 .

What is the default port used by OrientDB?

A)

1433

B)

1521

C)

1752

D)

2480

Correct Answer : 2480

Explanation : The default port used by OrientDB is 2480. However, it can be configured to use other ports as well.

16 .

Which of the following is a feature of OrientDB?

A)

Sharding

B)

Replication

C)

ACID transactions

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB supports ACID transactions, sharding, and replication, which makes it a highly scalable and reliable database system.

17 .

What is the role of a cluster in OrientDB?

A)

To store data

B)

To optimize query performance

C)

To distribute data across multiple servers

D)

To manage user authentication

Correct Answer : To distribute data across multiple servers

Explanation : A cluster in OrientDB is a group of servers that work together to distribute data across them. It helps to improve the scalability and availability of the database system.

18 .

Which of the following is not a supported index type in OrientDB?

A)

R-tree index

B)

Hash index

C)

B-tree index

D)

Full-text index

Correct Answer : R-tree index

Explanation : OrientDB supports various index types such as Hash index, B-tree index, Full-text index, and Spatial index. However, it does not support R-tree index.

19 .

Binary data may also be loaded and stored using OrientDB.

A)

True

B)

False

C)

Can Not Say

D)

None of the above

Correct Answer : True

Explanation : Binary data may also be loaded and stored using OrientDB.

20 .

The most fundamental unit of data in graph databases is the node, which is known as a ____ in OrientDB.

A)

Face

B)

Vertex

C)

Edge

D)

None of the above

Correct Answer : Vertex

Explanation : The most fundamental unit of data in graph databases is the node, which is known as a vertex in OrientDB.

21 .

An arc is a link between two nodes in a graph database, which is called an ____ in OrientDB.

A)

Face

B)

Vertex

C)

Edge

D)

None of the above

Correct Answer : Edge

Explanation : An arc is a link between two nodes in a graph database, which is called an edge in OrientDB.

22 .

Which of the following organization uses OrientDB?

A)

Novatec

B)

Cisco System

C)

LG electronics

D)

All of the above

Correct Answer : All of the above

Explanation : The following organization uses OrientDB :

* Cisco System
* LG electronics
* Novatec

23 .

A ____ takes a snapshot of the database at a certain moment in time.

A)

Hot Backup

B)

Snapshot Backup

C)

Cold Backup

D)

Incremental Backup

Correct Answer : Snapshot Backup

Explanation : A snapshot backup takes a snapshot of the database at a certain moment in time.

24 .

A ____ is a backup of the whole OrientDB database, including data and metadata.

A)

Full Backup

B)

Cold Backup

C)

Snapshot Backup

D)

Incremental Backup

Correct Answer : Full Backup

Explanation : A full backup is a backup of the whole OrientDB database, including data and metadata.

25 .

When the OrientDB database is online and in use, a ____ is conducted.

A)

Cold Backup

B)

Full Backup

C)

Hot Backup

D)

Incremental Backup

Correct Answer : Hot Backup

Explanation : When the OrientDB database is online and in use, a hot backup is conducted.

26 .

An ____ just saves the changes to the database that have occurred since the previous backup.

A)

Hot Backup

B)

Cold Backup

C)

Full Backup

D)

Incremental Backup

Correct Answer : Incremental Backup

Explanation : An incremental backup just saves the changes to the database that have occurred since the previous backup.

27 .

In a ____ database, multiple servers work together to manage a single database.

A)

Clustered Database

B)

Distributed Database

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Clustered Database

Explanation : In a clustered database, multiple servers work together to manage a single database.

28 .

How many vertices can the edge link?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : Edges can only link two vertices and are bidirectional.

29 .

Classes can be ____?

A)

Schema Full

B)

Schema Less

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Both (A) and (B)

Explanation : Classes can be schema-less, schema-full, or a combination of the two.

30 .

Is the Abstract Class feature available in Orient DB?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : Yes

Explanation : Yes, the Abstract class feature is available in OrientDB.

31 .

Which of the following is not a supported authentication method in OrientDB?

A)

LDAP

B)

OAuth

C)

Internal

D)

Kerberos

Correct Answer : OAuth

Explanation : OrientDB supports various authentication methods such as Internal, LDAP, and Kerberos. However, it does not support OAuth authentication.

32 .

Which of the following is a benefit of using OrientDB over traditional relational databases?

A)

Easier scalability

B)

Better performance

C)

Flexible data modeling

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB provides a flexible data modeling approach, which allows users to model their data according to their requirements. It also offers better performance and easier scalability as compared to traditional relational databases.

33 .

What is the default isolation level used by OrientDB?

A)

Serializable

B)

Repeatable read

C)

Read committed

D)

None of the above

Correct Answer : Read committed

Explanation : The default isolation level used by OrientDB is Read committed. However, users can configure the isolation level according to their requirements.

34 .

Which of the following is a feature of OrientDB Studio?

A)

Query builder

B)

Data visualization

C)

Performance monitoring

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB Studio is a web-based tool that provides various functionalities such as data visualization, query builder, performance monitoring, and many others.

35 .

Which of the following is a disadvantage of using OrientDB?

A)

Higher cost

B)

Limited community support

C)

Steep learning curve

D)

All of the above

Correct Answer : Steep learning curve

Explanation : OrientDB has a steeper learning curve as compared to traditional relational databases, which can make it difficult for new users to get started with it.

36 .

What is the role of a class in OrientDB?

A)

To perform calculations on data

B)

To define the structure of data

C)

To manage the relationship between data

D)

None of the above

Correct Answer : To define the structure of data

Explanation : A class in OrientDB is used to define the structure of data that is stored in the database. It defines the properties of data, its data types, and other attributes.

37 .

Which of the following is not a supported data format in OrientDB?

A)

CSV

B)

XML

C)

JSON

D)

YAML

Correct Answer : YAML

Explanation : OrientDB supports various data formats such as JSON, XML, and CSV. However, it does not support YAML.

38 .

What is the role of a vertex in OrientDB?

A)

To represent a data object

B)

To perform calculations on data

C)

To manage the relationship between data objects

D)

None of the above

Correct Answer : To represent a data object

Explanation : A vertex in OrientDB is used to represent a data object in a graph structure. It can have properties and relationships with other vertices or edges.

39 .

____ give physical or in-memory space for OrientDB to store data?

A)

Groups

B)

Tables

C)

Clusters

D)

Chambers

Correct Answer : Clusters

Explanation : Clusters give physical or in-memory space for OrientDB to store data.

40 .

OrientDB allows how many types of relationships?

A)

2

B)

3

C)

4

D)

5

Correct Answer : 2

Explanation : OrientDB allows for two types of relationships: referenced and embedded.

41 .

Which relationship is stronger?

A)

Referenced

B)

Embedded

C)

Can Not Say

D)

None of the above

Correct Answer : Embedded

Explanation : Embedded relationships are stronger than referenced ones.

42 .

Which console mode accepts commands as command-line arguments or as a text file and executes the commands in that file in sequence?

A)

Serial Mode

B)

Interactive Mode

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Both (A) and (B)

Explaination : In batch mode, it accepts commands as command-line arguments or as a text file and executes the commands in that file in the sequence.

43 .

Which of the following command, Shows all classes that have been specified in the current database?

A)

Class

B)

Classes

C)

Browse Class

D)

Browse Classes

Correct Answer : Classes

Explanation : This shows all classes that have been specified in the current database.

44 .

In a ____ database, data is spread across multiple servers, and each server manages a portion of the data.

A)

Clustered Database

B)

Distributed Database

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Distributed Database

Explanation : In a distributed database, data is spread across multiple servers, and each server manages a portion of the data.

45 .

In OrientDB, a ____ is a command that fetches data from the database depending on predefined criteria.

A)

Query

B)

Cluster

C)

Record

D)

None of the above

Correct Answer : Query

Explanation : In OrientDB, a query is a command that fetches data from the database depending on predefined criteria.

46 .

In OrientDB, a ____ is a piece of code that may be performed as a single unit.

A)

Property

B)

User-defined function

C)

stored procedure

D)

None of the above

Correct Answer : stored procedure

Explanation : In OrientDB, a stored procedure is a piece of code that may be performed as a single unit.

47 .

Among the Local index and Global index which of the following index is created on Multiple nodes?

A)

Global Index

B)

Local Index

C)

Can Not Say

D)

None of the above

Correct Answer : Global Index

Explanation : Among the Local index and Global index, the Global index is created on Multiple nodes, whereas the local index is a distributed database index that is produced on a single node.

48 .

The status of the cluster in distributed configuration is displayed, with which of the following command?

A)

Status

B)

Cluster Status

C)

Browse Cluster status

D)

None of the above

Correct Answer : Cluster Status

Explanation : The status of the cluster in distributed configuration is displayed by the Cluster status command.

49 .

Which of the following command Closes the database that is presently open?

A)

Exit

B)

End

C)

Close

D)

Disconnect

Correct Answer : Disconnect

Explanation : The disconnect command, Closes the database that is presently open.

50 .

Which of the following statements is true in OrientDB?

A)

ACID transactions are not supported by MongoDB but are supported by OrientDB.

B)

ACID transactions are supported by MongoDB but are not supported by OrientDB.

C)

Both (A) and (B)

D)

None of the above

Correct Answer : ACID transactions are not supported by MongoDB but are supported by OrientDB.

51 .

Which of the following command is used to create a database in OrientDB?

A)

Create db<databasename>

B)

Create new db<databasename>

C)

Create database<databasename>

D)

Create new database<databasename>

Correct Answer : Create database<databasename>

Explaination : Create database<databasename> command is used to create a database in OrientDB.

52 .

____ is the process of splitting a database into smaller, more manageable components known as shards in OrientDB?

A)

Caching

B)

Sharding

C)

Clustering

D)

None of the above

Correct Answer : Sharding

Explanation : Sharding is the process of splitting a database into smaller, more manageable components known as shards in OrientDB.

53 .

While the OrientDB database is offline or not in use, a ____ is conducted.

A)

Full Backup

B)

Hot Backup

C)

Cold Backup

D)

Incremental Backup

Correct Answer : Cold Backup

Explanation : While the OrientDB database is offline or not in use, a cold backup is conducted.

54 .

OrientDB provides ____ default users by default when you create a new database.

A)

3

B)

4

C)

5

D)

6

Correct Answer : 3

Explanation : OrientDB provides three default users by default when you create a new database:

* Admin
* Writer
* Reader

55 .

OrientDB databases are ____ by default?

A)

Encrypted

B)

not encrypted

C)

Can Not Say

D)

None of the above

Correct Answer : not encrypted

Explanation : OrientDB databases are not encrypted by default.

56 .

In OrientDB, an ____ is a data structure that enables quick lookups of records based on a certain field or combination of fields.

A)

Set

B)

List

C)

Map

D)

Index

Correct Answer : Index

Explaination : In OrientDB, an index is a data structure that enables quick lookups of records based on a certain field or combination of fields.

57 .

Which of the following indexes does OrientDB supports?

A)

Unique

B)

non-unique

C)

Spatial indexes

D)

All of the above

Correct Answer : All of the above

Explanation : Indexes supported by OrientDB include unique, non-unique, full-text, and spatial indexes.

58 .

____ in OrientDB refers to the database's capacity to manage rising volumes of data and traffic by adding more resources.

A)

Scaling

B)

Sharding

C)

Expansion

D)

None of the above

Correct Answer : Scaling

Explaination : Scaling in OrientDB refers to the database's capacity to manage rising volumes of data and traffic by adding more resources.

59 .

Which of the following is not a supported edge type in OrientDB?

A)

Directed

B)

Weighted

C)

Undirected

D)

Bi-directional

Correct Answer : Undirected

Explanation : OrientDB supports various edge types such as Directed, Bi-directional, and Weighted. However, it does not support Undirected edges.

60 .

Which of the following is a benefit of using OrientDB in a distributed environment?

A)

Improved scalability

B)

Improved performance

C)

Improved fault tolerance

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB is designed to work in a distributed environment, which offers several benefits such as improved scalability, fault tolerance, and performance.

61 .

Which of the following is a benefit of using OrientDB's indexing feature?

A)

Improved query performance

B)

Improved data security

C)

Improved data retrieval speed

D)

All of the above

Correct Answer : Improved query performance

Explanation : OrientDB’s indexing feature improves query performance by reducing the time required to search for data in the database.

62 .

Which of the following is a benefit of using OrientDB's SQL support?

A)

Improved query performance

B)

Faster application development

C)

Easy integration with existing systems

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB’s SQL support allows users to easily integrate with existing systems, faster application development, and improved query performance.

63 .

What is the role of a trigger in OrientDB?

A)

To perform calculations on data

B)

To manage the relationship between data

C)

To perform actions on data before or after an operation

D)

None of the above

Correct Answer : To perform actions on data before or after an operation

Explanation : A trigger in OrientDB is used to perform actions on data before or after an operation such as insert, update, or delete.

64 .

Which of the following is a benefit of using OrientDB's security features?

A)

Improved data privacy

B)

Improved data security

C)

Improved access control

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB’s security features offer several benefits such as improved data security, privacy, and access control.

65 .

Which of the following is not a supported language for OrientDB's Gremlin query language?

A)

Java

B)

Python

C)

JavaScript

D)

None of the above

Correct Answer : None of the above

Explanation : OrientDB’s Gremlin query language supports various programming languages such as Java, Python, and JavaScript.

66 .

In OrientDB, a ____ is an index that allows for efficient searching of text-based data.

A)

Real Index

B)

Unique Index

C)

Full-time index

D)

None of the above

Correct Answer : Full-time index

Explanation : In OrientDB, a full-text index is an index that allows for efficient searching of text-based data.

67 .

______ refers to the process of completing a transaction by storing all changes in the database.

A)

RollBack

B)

Commit

C)

Savepoint

D)

None of the above

Correct Answer : Commit

Explanation : Commit refers to the process of completing a transaction by storing all changes to the database.

68 .

____ refers to restoring the database state to the point when the transaction was initiated.

A)

RollBack

B)

Commit

C)

Savepoint

D)

None of the above

Correct Answer : RollBack

Explanation : Rollback refers to restoring the database state to the point when the transaction was initiated.

69 .

Binary protocol drivers utilize the default binary protocol port ____?

A)

2030

B)

2424

C)

8000

D)

8182

Correct Answer : 2424

Explanation : Binary protocol drivers utilize the default binary protocol port 2424.

70 .

The ____ command deletes the values of a specific record.

A)

Del Record

B)

Delete Record

C)

Truncate Record

D)

None of the above

Correct Answer : Truncate Record

Explanation : The Truncate Record command deletes the values of a specific record.

71 .

Which of the following is not a supported property type in OrientDB?

A)

Date

B)

String

C)

Binary

D)

Currency

Correct Answer : Currency

Explanation : OrientDB supports various property types such as String, Date, and Binary. However, it does not support the Currency property type.

72 .

Which of the following is a benefit of using OrientDB's RESTful API?

A)

Improved query performance

B)

Faster application development

C)

Easy integration with existing systems

D)

None of the above

Correct Answer : Easy integration with existing systems

Explanation : OrientDB’s RESTful API allows users to easily integrate with existing systems and services.

73 .

Which of the following is a disadvantage of using OrientDB's graph database feature?

A)

Higher cost

B)

Higher complexity

C)

Lower fault tolerance

D)

All of the above

Correct Answer : Higher complexity

Explanation : Using OrientDB’s graph database feature can be more complex as compared to using its other features.

74 .

Which of the following is a benefit of using OrientDB's spatial indexing feature?

A)

Improved data modeling

B)

Improved query performance

C)

Improved data retrieval speed

D)

All of the above

Correct Answer : Improved data retrieval speed

Explanation : OrientDB’s spatial indexing feature allows users to improve data retrieval speed by creating indexes on spatial data.

75 .

Which of the following is not a supported graph database feature in OrientDB?

A)

Traversal

B)

Pattern matching

C)

Vertex-centric indexing

D)

Distributed transactions

Correct Answer : Distributed transactions

Explanation : OrientDB supports various graph database features such as Vertex-centric indexing, Pattern matching, and Traversal. However, it does not support Distributed transactions feature in its graph database.

76 .

Which of the following is a disadvantage of using OrientDB's distributed architecture?

A)

Higher cost

B)

Higher complexity

C)

Lower fault tolerance

D)

All of the above

Correct Answer : Higher complexity

Explanation : Using OrientDB’s distributed architecture can be more complex as compared to using its other features.

77 .

Which of the following is not a supported storage type in OrientDB?

A)

Network

B)

Disk

C)

Memory

D)

Distributed

Correct Answer : Network

Explanation : OrientDB supports various storage types such as Memory, Disk, and Distributed. However, it does not support Network storage type.

78 .

Which of the following is not a supported replication mode in OrientDB?

A)

Linear

B)

Synchronous

C)

Asynchronous

D)

Semi-synchronous

Correct Answer : Linear

Explanation : OrientDB supports various replication modes such as Synchronous, Asynchronous, and Semi-synchronous. However, it does not support Linear replication mode.

79 .

Which of the following is not a supported sharding algorithm in Orient DB?

A)

Hash

B)

Linear

C)

Random

D)

Round-robin

Correct Answer : Linear

Explanation : OrientDB supports various sharding algorithms such as Round-robin, Hash, and Random. However, it does not support the Linear sharding algorithm.

80 .

Which of the following is not a supported join type in OrientDB's SQL-like query language?

A)

Inner join

B)

Left outer join

C)

Full outer join

D)

Right outer join

Correct Answer : Full outer join

Explanation : OrientDB’s SQL-like query language supports various join types such as Inner join, Left outer join, and Right outer join. However, it does not support Full outer join.

81 .

Which of the following is not a supported constraint type in OrientDB?

A)

Unique

B)

Not null

C)

Primary key

D)

Foreign key

Correct Answer : Foreign key

Explanation : OrientDB supports various constraint types such as Unique, Not null, and Primary key. However, it does not support Foreign key constraints.

82 .

Which of the following is a disadvantage of using OrientDB's indexing feature?

A)

Higher cost

B)

Higher complexity

C)

Lower fault tolerance

D)

All of the above

Correct Answer : Higher complexity

Explanation : Using OrientDB’s indexing feature can be more complex as compared to using its other features.

83 .

Which of the following is a benefit of using OrientDB's sharding feature?

A)

Improved scalability

B)

Improved fault tolerance

C)

Improved query performance

D)

All of the above

Correct Answer : All of the above

Explanation : OrientDB’s sharding feature offers several benefits such as improved scalability, fault tolerance, and query performance.