Data | MCQs

Explanation

The QUERY can be used to select data from single and multiple tables.

Single Table Query:

When you want to retrieve data from a single table, you can use a simple SELECT statement.

Multiple Table Query:

To retrieve data from multiple tables, you use a JOIN clause. 

Explanation

• A half-byte, also known as a nibble.
• It is a unit of digital information that consists of 4 bits (or half of a byte, which is 8 bits).
• It can represent 16 different values, from 0000 to 1111.

Explanation

Records are referred to in a database as: Rows

Explanation

In database management and information architecture, a data bank or databank is a repository of information about one or more subjects, that is, a database which is organized in a way that facilitates local or remote information retrieval and is able to process many continual queries over a long period of time.

Explanation

An element of an array is identified using its subscript (also called an index).

The subscript indicates the position of the element within the array, with most programming languages starting the index at 0.

Explanation

Non – numeric data is any form of data that is measured in non-number  form.

It makes use of symbols and letters.

Such data can only be identified in a word format.

For example, employee address, date of birth, name, etc.

Explanation

• Singular noun: analysis
• Plural noun: analyses
• Analysis means تجزیہ 

Explanation

Explanation

Data Privacy Day is observed on 28 January.

Theme 2023: Think Privacy First 

Explanation

Data Privacy Day is observed on 28 January.

Theme 2023: Think Privacy First