MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A database is ____
A
A collection of files
B
A persistent, organised store of data
C
An unstructured collection of data
D
A folder containing related files
Explanation: 

Detailed explanation-1: -A database is an organized repository of related information stored in a manner that enables it to be easily accessed, managed, and updated. Databases store information in a grid system consisting of rows and columns to make retrieval easier. Data gathered from multiple sources cannot be used as it is.

Detailed explanation-2: -Persistent data is time independent data. The data created by an application or object continues to exist even after the parent application or object has been deleted and remains accessible beyond object boundaries, other processes, or transactions. Persistent data remains in its original format.

Detailed explanation-3: -You can describe a database as an organised collection of related information (or data) that is stored in a computer system. You can then, in an easy way, access, manage and update that data. Usually, a database is controlled by a Database Management System, also known as a DBSM.

Detailed explanation-4: -A database is an organized collection of structured information, or data, typically stored electronically in a computer system. A database is usually controlled by a database management system (DBMS).

Detailed explanation-5: -Definition of persistent data A persistent (or non-volatile) storage medium is a medium where the data remains intact after it has been written, until it is overwritten. This includes flash memory (SSDs, USB sticks), hard disks, magnetic tape, and optical media.

There is 1 question to complete.