Question
In a database, a 'Primary Key' is a field
that:Solution
A Primary Key is a special relational database field (or combination of fields) that uniquely identifies each record/row in a table. Its values must be unique and cannot be NULL. It is the main method of ensuring data integrity and creating relationships between tables.
______________ is an important circuitry in a computer system that does the arithmetic and logical processing.
Which of the following is erased by exposing it to UV light?
……….helps to capture the raw data and enter into the computer system.
Which of the following is a column, or set of columns, in a table that can uniquely identify any database record without referring to any other data?
Which of the following is not a function of the control unit ?
______are specially designed computer chips that reside inside other device, such as your car or your electronic thermostat.
What is the purpose of an IP address in a network?
Collection of hyperlinked documents on the internet forms the ?
One megabyte is equal
Which of the following is not an e-mail service provider?
