Semantic Annotations for WSDL and XML Schema (SAWSDL) is a 2007 published technical recommendation of W3C in the context

Context

Context may refer to:* Context , the relevant constraints of the communicative situation that influence language use, language variation, and discourse summary...

 of Semantic Web

Semantic Web

The Semantic Web is a collaborative movement led by the World Wide Web Consortium that promotes common formats for data on the World Wide Web. By encouraging the inclusion of semantic content in web pages, the Semantic Web aims at converting the current web of unstructured documents into a "web of...

 framework

Framework

Framework may refer to:*Software framework, a reusable set of libraries or classes for a software system .**Application framework, a software framework used to implement the standard structure of an application for a specific operating system....

:

SAWSDL defines a set of extension attribute

Attribute

Attribute may refer to:* In research, a characteristic of an object - see attribute * In philosophy, property , an abstraction of a characteristic of an entity or substance...

s for the Web Services Description Language (WSDL) and XML Schema

XML Schema

XML Schema, published as a W3C recommendation in May 2001, is one of several XML schema languages. It was the first separate schema language for XML to achieve Recommendation status by the W3C...

 definition

Definition

A definition is a passage that explains the meaning of a term , or a type of thing. The term to be defined is the definiendum. A term may have many different senses or meanings...

 language

Language

Language may refer either to the specifically human capacity for acquiring and using complex systems of communication, or to a specific instance of such a system of complex communication...

. Application of the attributes shall allow for description

Description

Description is one of four rhetorical modes , along with exposition, argumentation, and narration. Each of the rhetorical modes is present in a variety of forms and each has its own purpose and conventions....

 of additional semantics

Semantics

Semantics is the study of meaning. It focuses on the relation between signifiers, such as words, phrases, signs and symbols, and what they stand for, their denotata....

 of WSDL component

Component

-Usage:Component may refer to:* System components, the constituents of a system* Electronic components, the constituents of electronic circuits* Component ingredient, the main ingredient in a dish...

s. The specification defines how semantic annotation

Annotation

An annotation is a note that is made while reading any form of text. This may be as simple as underlining or highlighting passages.Annotated bibliographies give descriptions about how each source is useful to an author in constructing a paper or argument...

 is accomplished using references to conceptual semantic models

Conceptual model

In the most general sense, a model is anything used in any way to represent anything else. Some models are physical objects, for instance, a toy model which may be assembled, and may even be made to work like the object it represents. They are used to help us know and understand the subject matter...

, e.g. ontologies

Ontology

Ontology is the philosophical study of the nature of being, existence or reality as such, as well as the basic categories of being and their relations...

. Semantic annotations for WSDL and XML Schema (SAWSDL) does not specify a language for representing the semantic models. Instead it provides mechanisms by which concept

Concept

The word concept is used in ordinary language as well as in almost all academic disciplines. Particularly in philosophy, psychology and cognitive sciences the term is much used and much discussed. WordNet defines concept: "conception, construct ". However, the meaning of the term concept is much...

s from the semantic models can be referred using annotations (citation abbreviated).