Question

What is the advantage of using keys in a database?

Keys _________records of one table with the others.

Answer 1

Answer:

Using the primary key, you can easily identify and find unique rows in the database table. They allow you to update/delete only specific records by uniquely identifying them. The table's data is sorted based on the primary key. They help you avoid inserting duplicate records in a table.

Answer 2

Concept:

A key is an attribute (or group of attributes) that allows us to uniquely identify a row (or tuple) in a table (or relation). In a relational database, a key is also used to establish relationships between the various columns and tables.

Find:

What is the advantage o using keys in a database?

Solution:

For the following reasons, keys are essential to a table's structure:

• They make sure that each record in a table is identified precisely.

• They assist in the establishment and enforcement of various sorts of integrity. Table-level integrity and relationship-level integrity both rely heavily on keys.

• They're used to establish table relationships.

The column in a table that points to the primary key of another table is referred to as a foreign key.

Hence, keys associate records of one table with the others.