Explanation

Ecommerce, also known as electronic commerce or internet commerce, refers to the buying and selling of goods or services using the internet, and the transfer of money and data to execute these transactions.

Explanation

In database design, a composite key is a candidate key that consists of two or more attributes (table columns) that together uniquely identify an entity occurrence (table row).

A compound key is a composite key for which each attribute that makes up the key is a simple (foreign) key in its own right.

Explanation

A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs.

Explanation

A spreadsheet is a software program you use to easily perform mathematical calculations on statistical data and totaling long columns of numbers or determining percentages and averages.

Explanation

The edge of paper page and columns is known as margin.