Short for XML Schema Definition, a way to describe and validate data in an XML environment. (A schema is a model for describing the structure of information.) XSD is a recommendation of the W3C.
XSD has advantages over earlier XML schema languages, such as DTD. Because XSD is written in XML, there is no need for a parser. XSD defines a richer set of data typessuch as booleans, numbers, dates and times, and currencies — which is invaluable for e-commerce applications. DTDs, on the other hand, express data types as explicit enumerations, which makes validation much more difficult and less accurate.
More important, XSD makes it easier to validate documents based on namespaces (used to qualify element and attributes names by associating them with namespaces identified by URI references. Namespaces prevent identically custom-named tagsthat may be used in different XML documents from being read the same way), something DTDs cannot do.
XSD is defined in the W3C’s XML Schema Working Group Working Draft published on May 6, 1999.
Short for Extensible Style Language, a specification for separating style from content when creating HTML or XML pages. The specifications work much like templates, allowing designers to apply single style documents to multiple pages. XSL is the second style specification to be offered by the World Wide Web Consortium (W3C )(www.w3c.org). The first, called Cascading […]
Short for Extensible Style Language Transformation, the language used in XSL style sheets to transform XML documents into other XML documents. An XSL processor reads the XML document and follows the instructions in the XSL style sheet, then it outputs a new XML document or XML-document fragment. This is extremely useful in e-commerce, where the […]
(1) When spelled xSP, a generic term for a service provider on the Internet, such as an application service provider (ASP), network service provider (NSP) or an Internet service provider (ISP). (2) When spelled XSP, short for eXtensible Server Pages. The XSP language is a core technology of Cocoon, XML-based Web publishing in Java and […]
An abbreviation of cross-site scripting. XSS is a security breach that takes advantage of dynamically generated Web pages. In an XSS attack, a Web application is sent with a script that activates when it is read by an unsuspecting user��s browser or by an application that has not protected itself against cross-site scripting. Because dynamic […]
Short for eXtendedSVCD, XSVCD is a nonstandardized recording format that offers features similar to SVCD. However, it can produce a higher video quality. XSVCD uses MPEG2 video. It can be played on computers with a computers with a CD or DVD-ROMs with the use of compatible software. See SVCD.