MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the correct definition of a Record?
A
Uniquely identifies any record in a table
B
It is always a number
C
Used to store all of the data about each specific item
D
Used to store a category (e.g. Names / Gender / Mobile Num)
Explanation: 

Detailed explanation-1: -A record is a collection of fields, possibly of different data types, typically in a fixed number and sequence. The fields of a record may also be called members, particularly in object-oriented programming; fields may also be called elements, though this risks confusion with the elements of a collection.

Detailed explanation-2: -A record in a database is an object that can contain one or more values. Groups of records are then saved in a table; the table defines the data that each record may contain. In a given database, there are multiple tables, each containing multiple records.

Detailed explanation-3: -Often, a record collects related information that is treated as a unit, such as one item in a database or personnel data about one member of a department. The term field refers to a specific portion of a record used for a particular category of data, such as an employee’s name or department.

Detailed explanation-4: -Primary key A table can have only one primary key. A primary key consists of one or more fields that uniquely identify each record that you store in the table.

Detailed explanation-5: -A table is used to store data records or entities along with their attributes in form of rows and columns.

There is 1 question to complete.