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1. In computer science, a schema is a model.
2. In formal logic, a rule (usually recursively definable) describing a set (usually infinite) of statements. For example, the axiom schema of replacement is a schema of axioms in axiomatic set theory.
3. A description of the structure of a database; or: a defined part of a database. See software architecture, conceptual schema, Sowa's conceptual graph, semantic network, Berners-Lee's semantic web.
4. An XML schema provides a means for defining the structure, content and to some extent, the semantics of XML documents.
5. Part of a formal specification written in the Z formal specification language .
6. A minimal and specialized ontologyThis article is about the philosophical meaning of ontology . For the term in computer science, see ontology (computer science). In philosophy, ontology is the most fundamental branch of metaphysics. It is the study of being or existence as well as the ba, i.e., a list of questions, answers to which describe what exists in the world. This includes only what is required for some narrow range of actions; e.g., a library card catalogue schema asks librarians only to provide enough information about the book to help library users decide if they want to browse through it, and if so, how to find it. By contrast, an ontologyThis article is about the philosophical meaning of ontology . For the term in computer science, see ontology (computer science). In philosophy, ontology is the most fundamental branch of metaphysics. It is the study of being or existence as well as the ba enables a much broader range of actions, e.g., all of those normally associated with a working tradeTrade centers on the exchange of goods and/or services. Exchanges may take place between two parties (bilateral trade) or amongst more than two parties (multilateral trade). In its original form trade necessarily used barter and the exchange of goods and or professionA profession is a specialized work function within society, generally performed by a professional. Definitions In a more restrictive sense, profession often refers specifically to fields that require extensive study and mastery of specialized knowledge, s.
7. Schemas also are very important in the field of psychology, especially concerning educational practices.

See also schemeA scheme is a plan or a system of related parts. The word comes from the Latin schema which means "figure". Special meanings of the word include the following. The Scheme programming language is a dialect of Lisp. In mathematics, schemes are an important.

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Schematic planned languageA schematic planned language is a type of constructed language whose grammar and morphology have been deliberately simplified and regularized, with idiosyncrasies from source languages (if any) removed, in order to be simpler and more streamlined than tho SchematicA schematic is a diagram, drawing, or sketch that details the elements of a system, such as the elements of an electrical or electronic circuit or the elements of a logic diagram for a computer or communications system. Electronic industry In electronic d SchemaThe word schema comes from the Greek word "" (schema) that means shape or more generally plan . The word schema can represent any of several different things: # In computer science, a schema is a model. In formal logic, a rule (usually recursively definab SchematronThe Schematron is an XML structure validation language using patterns in trees. It is a simple and powerful structural schema language. Schematron is being standardized to become part of : ISO/ IEC 19757 Document Schema Definition Languages (DSDL) Part 3: Schematic captureSchematic capture or schematic entry is a step in the design cycle of electronic design automation at which the electronic diagram, or schematic of the designed electronic circuit is created by a designer. This is done interactively with the help of a sch Schematic editorSchematic editor is a tool for schematic capture of electronic circuits. Schematic editors replaced manual drawing of schematic diagrams, but they still retain the capability of outputting schematics on specially formatted sheets. At the same time modern Schemata theory Schema (psychology)