Understanding Attributes in Databases

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Question:

What is the definition of attribute in database?

Answer:

In the context of databases, an attribute is a property or characteristic of an entity. It represents a specific piece of data that can be stored in a database table. Each attribute corresponds to a column in a table, and it defines the type of data that can be stored in that column.

For example, in a database table representing "Employees," attributes might include:

  • EmployeeID (a unique identifier for each employee)
  • FirstName (the employee's first name)
  • LastName (the employee's last name)
  • DateOfBirth (the employee's date of birth)
  • Email (the employee's email address)

Attributes help to define the structure of the data and are essential for organizing and retrieving information in a database. Each attribute has a specific data type (such as integer, string, date, etc.) that determines the kind of values it can hold.