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  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 entityrelationship 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. Database design - Wikipedia

    en.wikipedia.org/wiki/Database_design

    A sample entityrelationship diagram. One of the most common types of conceptual schemas is the ER (entityrelationship model) diagrams. Attributes in ER diagrams are usually modeled as an oval with the name of the attribute, linked to the entity or relationship that contains the attribute.

  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 entityrelationship diagrams (ERDs), XML schemas (XSD), and an enterprise wide data dictionary.

  6. Cardinality (data modeling) - Wikipedia

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

    The entityrelationship model proposes a technique that produces entityrelationship 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]

  7. Category:Entity–relationship model - Wikipedia

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

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

  8. Meta has donated $1 million to President-elect Donald Trump’s inaugural fund, the company confirmed to CNN. The news comes two weeks after Meta CEO Mark Zuckerberg met with Trump privately at ...

  9. Enhanced entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Enhanced_entity...

    The enhanced entityrelationship (EER) model (or extended entityrelationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entityrelationship (ER) model, used in the design of databases.