Explanation

• Entity integrity means Primary key must be unique and NOT NULL.
• It ensures every row in a table is uniquely identifiable.
• No two rows can have the same primary key value.
• Primary key cannot be empty or missing.
• It maintains data accuracy in relational databases.

Last verified on 17-06-2026

Explanation

• Data is stored permanently in Secondary storage.
• It keeps data even when the computer is turned off.
• It is non-volatile.
• It is used for long-term data saving.
• Examples include hard disk and SSD.

Last verified on 17-06-2026

Explanation

• 3NF removes transitive dependency from a database table.
• It ensures that non-key attributes depend only on the primary key.
• This improves data consistency and reduces redundancy.
• 3NF is a higher level of database normalization.

Last verified on 17-06-2026

Explanation

• Email stands for Electronic Mail.
• It is a method of sending and receiving digital messages through the internet.
• The term electronic mail has been used with its modern meaning since 1975.
• The shorter form E-mail became common around 1979.

Additional information:

Parts of a valid email address:

1. Email Prefix
2. Email Domain

Address: example@mail.com

1. example = Email Prefix
2. mail.com = Email Domain

Last verified on 16-06-2026

Explanation

• Front Side Bus (FSB) provides fast communication between the CPU and RAM (main memory).
• It connects the processor with the memory controller and other chipset components.
• A higher FSB speed allows faster data transfer between CPU and RAM.
• It was commonly used in older computer architectures.

Last verified on 13-06-2026