Question

2) (a) Tina has made a database table in Access containing
fields_name, Class, Roll_No. and Contact_no. She has
set primary key for the field ‘Student_name’. Has she
done the right thing by setting the primary key for this
field? Give reason.

Answer 1

Answer:

A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one primary key. Access can automatically create a primary key field for you when you create a table, or you can specify the fields that you want to use as the primary key. This article explains how and why to use primary keys.

To set a table’s primary key, open the table in Design view. Select the field (or fields) that you want to use, and then on the ribbon, click Primary Key.

Explanation:

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