A conceptual schema, or High-level data model or conceptual data model, is a map of concepts and their relationships, for example, a conceptual schema for a karate studio would include abstractions such as student, belt, grading and tournament. // An abstraction is an idea, concept, or word which defines the phenomena which make up the concrete events or things which the abstraction refers to, the referents. ...

The next step towards creating a database design, after a conceptual schema is produced, is a logical schema. Database design is the process of producing a detailed data model of a database. ... A Logical schema is a data model of a specific problem domain that has more detail than a conceptual schema, but does not include the design considerations and physical storage parameters found in a physical schema. ...

Concepts

• Abstraction (a class of something)
• Physical object (an instance of a Class)

// An abstraction is an idea, concept, or word which defines the phenomena which make up the concrete events or things which the abstraction refers to, the referents. ... In object-oriented programming, classes are used to group related variables and functions. ... An object is fundamental concept in object-oriented programming. ...

Relationships

• A is a B and B has a A
• A contains B
• A requires B

In computer science, the term inheritance may be applied to a variety of situations in which certain characteristics are passed on from one context to another. ... In database design and program architecture, Has-a is a relationship where one object belongs to another object, and behaves according to the rules of ownership. ...

See also

• Concept mapping
• Entity-relationship model
• Knowledge representation
• Mindmap
• Ontology
• Semantic Web

Concept mapping is a technique to visualize the relations between concepts. ... The entity-relationship model or entity-relationship diagram (ERD) is a data model or diagram for high-level descriptions of conceptual data models, and it provides a graphical notation for representing such data models in the form of entity-relationship diagrams. ... Knowledge representation is needed for library classification and for processing concepts in an information system. ... A mind map or mindmap is a multicoloured and image centered radial diagram that represents semantic or other connections between portions of learned material. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... The Semantic Web is a project that intends to create a universal medium for information exchange by giving meaning (semantics), in a manner understandable by machines, to the content of documents on the Web. ...

External link

• Documentation slightly biased to certain software