Schema vs Category - What's the difference?
schema | category |
An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind (for example, a ).
(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 for XML files.
(logic) A formula in the language 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.
A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
*
(mathematics) A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.
As nouns the difference between schema and category
is that schema is 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) while category is a group, often named or numbered, to which items are assigned based on similarity or defined criteria.schema
English
Noun
(en-noun)Synonyms
* (universally-applicable image or outline) schemat * (databases) schemat * (logic) axiom schema, schematDerived terms
* conceptual schema * logical schema * physical schemaAnagrams
* *References
* “schema]” listed in the [[w:Oxford English Dictionary, Oxford English Dictionary], second edition (1989) English nouns with irregular plurals ----
category
English
(wikipedia category)Noun
(categories)- The traditional way of describing the similarities and differences between constituents is to say that they belong to categories'' of various types. Thus, words like ''boy'', ''girl'', ''man'', ''woman'', etc. are traditionally said to belong to the category''' of Nouns, whereas words like ''a'', ''the'', ''this'', and ''that'' are traditionally said to belong to the ' category of Determiners.
- This steep and dangerous climb belongs to the most difficult category .
- I wouldn't put this book in the same category as the author's first novel.
- One well-known category has sets as objects and functions as arrows.
- Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a category consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.