In the World Wide Web, a query string (or querystring)is the part of a uniform resource locator (URL) containing data that does not fit conveniently into a hierarchical path structure.

Description

The query string commonly includes fields added to a base URI by a Web browser or other client application, for example as part of an HTML form.

Web servers handle query strings

A web server can handle (process, respond to) a Hypertext Transfer Protocol request several ways, including:

Reading a file from its file system based on the URL path
Handling the request using logic that is specific to the type of resource
- The query string is available that logic for use in its processing