Glossary Definitions

Glossary

Cascading Style Sheet

A Cascading Style Sheet, or CSS, is a type of style sheet that tells Web browsers how to display XML documents.

CSS

see Cascading Style Sheet

Document Type Definition

A Document Type Definition, or DTD, defines rules of structure that XML documents must follow. DTDs define mandatory and optional elements and attributes. They also define the order in which elements may appear. Many industries have standardized DTDs so that companies can exchange and process information regardless of computer platforms or software.

DTD

see Document Type Definition

Extensible Markup Language

Extensible Markup Language, or XML, is a method of labelling pieces of data by what kind of information they represent. XML is considered extensible because you can define tags to mean whatever you want. It is a language because basic syntax rules must be followed. On its own, an XML document does nothing. It requires computer software, such as a style sheet and a browser, to be processed for display or other purposes.

style sheet

A style sheet is a file that tells a Web browser how to display an XML document. The most common and possibly simplest style sheet is the Cascading Style Sheet.

XML

see Extensible Markup Language