Quiz Yourself On Data Control Language Test

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Questions: 10 | Attempts: 415 | Updated: Mar 21, 2023

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Quiz Yourself On Data Control Language Test - Quiz

A data control language (DCL) is a component of SQL used to control access to data stored in a database. Take this test to quiz yourself on DCL test.

Questions and Answers

1.

DCL consists of how many commands?
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
Correct Answer
A. 2
2.

In DCL, does GRANT allow specified users to perform specified tasks?
- A.
  
  Yes
- B.
  
  No
- C.
  
  Sometimes
- D.
  
  Depends on the settings
Correct Answer
A. Yes

Explanation
The correct answer is "Yes" because in DCL (Data Control Language), the GRANT statement is used to grant permissions to specified users, allowing them to perform specified tasks. This statement gives users the necessary privileges to access and manipulate data in a database, ensuring that only authorized individuals can perform certain actions.

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3.

Is command related to the security issues?
- A.
  
  Yes
- B.
  
  No
- C.
  
  Maybe
- D.
  
  None of the above
Correct Answer
A. Yes

Explanation
The answer "Yes" suggests that the command is indeed related to security issues. This implies that the command in question has some relevance or impact on security measures or protocols.

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4.

DCL is the simplest SQL...
- A.
  
  Subset
- B.
  
  Client
- C.
  
  Member
- D.
  
  Breed
Correct Answer
A. Subset

Explanation
DCL stands for Data Control Language, which is a subset of SQL (Structured Query Language). DCL is used to control access to the database and perform tasks such as granting or revoking permissions, managing transactions, and ensuring data integrity. It is considered the simplest part of SQL because it focuses on managing and controlling the data rather than manipulating or retrieving it.

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5.

There are how many example(s) of DCL?
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
B. 2

Explanation
The question is asking for the number of examples of DCL. The answer provided is 2. This means that there are two examples of DCL.

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6.

DCL is used to control ____ in database.
- A.
  
  Privileges
- B.
  
  Controls
- C.
  
  Systems
- D.
  
  Clients
Correct Answer
B. Controls

Explanation
DCL, which stands for Data Control Language, is used to control various aspects of a database. It allows users to define and manage the access privileges of different users or roles within the database. By using DCL commands, administrators can grant or revoke privileges to control the actions that users can perform on the database objects. Therefore, the correct answer is "Controls".

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7.

There are how many types of privileges in DCL?
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
B. 2

Explanation
In DCL (Data Control Language), there are two types of privileges. This means that users can be granted or denied access to certain actions or operations in a database. The two types of privileges are: 1) System privileges, which control actions that affect the overall database system, and 2) Object privileges, which control actions that affect specific objects within the database, such as tables or views.

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8.

Which of these examples of privileges are CREATE SESSION, CREATE TABLE, CREATE USER?
- A.
  
  Object privileges
- B.
  
  System privileges
- C.
  
  Client privileges
- D.
  
  None of the above
Correct Answer
B. System privileges

Explanation
The examples given, CREATE SESSION, CREATE TABLE, and CREATE USER, are all system privileges. System privileges grant users the ability to perform specific actions within the database system, such as creating sessions, tables, or users. Object privileges, on the other hand, grant users permissions on specific database objects, such as tables or views. Client privileges is not a valid category of privileges in this context. Therefore, the correct answer is system privileges.

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9.

Which of these privileges means privileges on objects such as tables, views, synonyms, and procedure?
- A.
  
  Object
- B.
  
  System
- C.
  
  Vector
- D.
  
  Series
Correct Answer
A. Object

Explanation
The privilege that means privileges on objects such as tables, views, synonyms, and procedures is "Object." This privilege allows users to perform various actions on these database objects, such as querying, modifying, or deleting data. It grants control over the specific objects within the database and their associated operations.

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10.

Which of these statements create session to username?
- A.
  
  Grant
- B.
  
  Revoke
- C.
  
  Permit
- D.
  
  Create
Correct Answer
A. Grant

Explanation
Grant is the correct answer because the "Grant" statement is used to provide privileges or permissions to a user in a database system. In this case, the statement "Grant" is used to create a session for a specific username, allowing them to access and perform actions within the database. The other statements, "Revoke", "Permit", and "Create", do not specifically create a session for a username.

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