Differentiate between the terms **Attribute** and **Domain** in the context of Relational Data Model.

Question

Accepted Answer

- **Attribute** — A column/field of a table (relation). Each attribute has a name and represents one property of the entity stored in the table.
- **Domain** — The set of permissible values from which an attribute can take its value.

Example :

|Name|Class|Marks|
|---|---|---|
|aaa|XII|90|
|bbb|X|99|

Here `Name`, `Class` and `Marks` are *attributes*. The attribute `Class` has the domain `{X, XII}`.

Question 03

Answer

Explanation

Name	Class	Marks
aaa	XII	90
bbb	X	99