Question

what is a form and explain its uses

Answer 1

Form (HTML) From Wikipedia, the free encyclopedia. A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. 

Answer 2

A form in Access is a database object that you can use to create a user interface for a database application. A "bound" form is one that is directly connected to a data source such as a table or query, and can be used to enter, edit, or display data from that data source.
Form (HTML) A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields.