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"The entity-relationship model adopts the more natural view that the real world consists of entities and relationships. It incorporates some of the important semantic information about the real world." [2] In his original 1976 article Chen explicitly contrasts entity–relationship diagrams with record modelling techniques:
Data view: This includes all events (that generate data) and environmental data, such as correspondence, documents, etc., i.e. all company-relevant information objects, see also Entity Relationship Model; Product/Service view: Provides an overview of the entire product/service portfolio (incl. services, products, financial)
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]
Cooperative (aguda shitufit, אגודה שיתופית) – entity which may pursue profit, but with certain legal properties meant to facilitate greater participation by each shareholder, or member, in the entity's affairs. Shareholders usually have an additional relationship with the cooperative, such as employees or consumers.
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. ...
The main concept in this modeling perspective is the entity, this could be an object, phenomena, concept, thing etc. The data modeling languages have traditionally handled this perspective, examples of such being: The ER-language (Entity-Relationship) Generic Semantic Modeling language (GSM) Other approaches including:
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Functional Requirements for Bibliographic Records (FRBR / ˈ f ɜːr b ər /) is a conceptual entity–relationship model developed by the International Federation of Library Associations and Institutions (IFLA) that relates user tasks of retrieval and access in online library catalogues and bibliographic databases from a user’s perspective.