enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Entityrelationship_model

    Diagrams created to represent attributes as well as entities and relationships may be called entity-attribute-relationship diagrams, rather than entity–relationship models. An ER model is typically implemented as a database. In a simple relational database implementation, each row of a table represents one instance of an entity type, and each ...

  3. Barker's notation - Wikipedia

    en.wikipedia.org/wiki/Barker's_notation

    Barker's notation refers to the ERD notation developed by Richard Barker, Ian Palmer, Harry Ellis et al. whilst working at the British consulting firm CACI around 1981. The notation was adopted by Barker when he joined Oracle and is effectively defined in his book Entity Relationship Modelling as part of the CASE Method series of books.

  4. Entity-relationship diagram - Wikipedia

    en.wikipedia.org/?title=Entity-relationship...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Entity-relationship_diagram&oldid=493930394"

  5. Enterprise data modelling - Wikipedia

    en.wikipedia.org/wiki/Enterprise_data_modelling

    Enterprise data modelling or enterprise data modeling (EDM) is the practice of creating a graphical model of the data used by an enterprise or company. Typical outputs of this activity include an enterprise data model consisting of entity–relationship diagrams (ERDs), XML schemas (XSD), and an enterprise wide data dictionary.

  6. Category:Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Category:Entity...

    Pages in category "Entity–relationship model" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. ...

  7. Cardinality (data modeling) - Wikipedia

    en.wikipedia.org/wiki/Cardinality_(data_modeling)

    The entity–relationship model proposes a technique that produces entity–relationship diagrams (ERDs), which can be employed to capture information about data model entity types, relationships and cardinality. A Crow's foot shows a one-to-many relationship. Alternatively a single line represents a one-to-one relationship. [4]

  8. Associative entity - Wikipedia

    en.wikipedia.org/wiki/Associative_entity

    An associative entity is a term used in relational and entity–relationship theory. A relational database requires the implementation of a base relation (or base table) to resolve many-to-many relationships. A base relation representing this kind of entity is called, informally, an associative table. An associative entity (using Chen notation)

  9. File:Erd-entity-relationship-example1.svg - Wikipedia

    en.wikipedia.org/wiki/File:Erd-entity...

    Entity-relationship model; Usage on en.wikiversity.org Concept mapping; Usage on hu.wikipedia.org ER-modell; Usage on lv.wikipedia.org ER diagrammas; Usage on no.wikipedia.org Entitet–relasjonsmodell; Usage on pt.wikiversity.org Observatório de dados/BI/Capacidade/Junção; Usage on ro.wikipedia.org Modelul entitate-asociere; Usage on simple ...