Explanation

• RAM and Cache are volatile memories.
• It means their data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.
• RAM is used for running programs and storing temporary data.
• Cache is a high-speed memory that stores frequently used data for the CPU.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• A 2D array used for descriptive information is called a Table.
• It organizes data in rows and columns.
• Each row represents an entity record.
• Each column represents an attribute of that entity.

Last verified on 17-06-2026

Explanation

• E-banking is also called Online banking.
• It allows banking services through the internet.
• Customers can access accounts without visiting the bank.
• It is a part of modern digital financial system.
• It provides fast and convenient transactions.

Last verified on 17-06-2026

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

• ROM (Read Only Memory) is a non-volatile storage device.
• It stores data permanently even without power.

Additional information:

• RAM (Random Access Memory) is a volatile storage device.
• It loses data when power is off.

Last verified on 17-06-2026