In a relational database, a would ensure that two customers with the same name don’t get confused with each other.

Primary key

Explanation: Relational databases are those databases which are commonly found in the form of tables . It works in the relation pattern for accessing the data in the database

Primary key is a major factor which is found in the relational databases for the identification of the data in the table's column.It is considered as the unique value that corresponds to the values of rows in the table of relational database.

answer inspecting packets in isolation from their context;