scheme

About scheme or [schema

• Latin for “form.”
  • highly abstract
• Someone who wanted to refer to a “form” in some specific sense, but wanted to distinguish it from the “form” (form) of everyday speech, used the Latin vocabulary
  • The “object” in object-oriented design is a “thing”, but we don’t want to call it a “thing”, so we call it an object in English.
• This was done by different people in different fields, so the word has become difficult to understand the meaning.

https://en.wiktionary.org/wiki/scheme

From Medieval Latin schēma (“figure, form”), from Ancient Greek σχῆμα (skhêma, “form, shape”), from ἔχω (ékhō, “I hold”). Doublet of schema. Compare sketch.

scheme (plural schemes)

• A systematic plan of future action.
• A plot or secret, devious plan.
• An orderly combination of related parts.
• A chart or diagram of a system or object.
• (mathematics) A mathematical structure that enlarges the notion of algebraic variety in several ways, such as taking account of multiplicities and allowing “varieties” defined over any commutative ring (e.g. Fermat curves over the integers).
• (UK, chiefly Scotland) A council housing estate.
• (rhetoric) An artful deviation from the ordinary arrangement of words.
• (astrology) A representation of the aspects of the celestial bodies for any moment or at a given event.
• (Internet) Part of a uniform resource identifier indicating the protocol or other purpose, such as http: or news:.
• (UK, pensions) A portfolio of pension plans with related benefits comprising multiple independent members.

schema (plural schemata or schemas)

• An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind (for example, a body schema).
• (databases) A formal description of the structure of a database: the names of the tables, the names of the columns of each table, and the data type and other attributes of each column.
• (markup languages) A formal description of data, data types, and data file structures, such as XML schemas for XML files.
• (logic) A formula in the metalanguage of an axiomatic system, in which one or more schematic variables appear, which stand for any term or subformula of the system, which may or may not be required to satisfy certain conditions.
• (Christianity) A monastic habit in the Greek Orthodox Church.

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