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  2. File:ER Diagram MMORPG.svg - Wikipedia

    en.wikipedia.org/wiki/File:ER_Diagram_MMORPG.svg

    Download QR code; In other projects ... ER Model. A sample Entity-relationship diagram using Chen's notation. A sample Entity-relationship diagram. ... You are free ...

  3. Entity-relationship diagram - Wikipedia

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

    Download as PDF; Printable version; ... move to sidebar hide. From Wikipedia, the free encyclopedia. Redirect page. ... Entity–relationship model; Retrieved from ...

  4. Database design - Wikipedia

    en.wikipedia.org/wiki/Database_design

    A sample entity–relationship diagram One of the most common types of conceptual schemas is the ER ( entity–relationship 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. Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Entity–relationship_model

    An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).

  6. Many-to-many (data model) - Wikipedia

    en.wikipedia.org/wiki/Many-to-many_(data_model)

    For example, think of A as Authors, and B as Books. An Author can write several Books, and a Book can be written by several Authors. In a relational database management system, such relationships are usually implemented by means of an associative table (also known as join table, junction table or cross-reference table), say, AB with two one-to-many relationships A → AB and B → AB.

  7. Enhanced entity–relationship model - Wikipedia

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

    The MySQL Workbench offers creating, editing and exporting EER Models. Exporting to PNG and PDF allows easy sharing for presentations. Skipper allows users to create, import and export from object–relational mapping (ORM) schema definitions to editable EER models. SAP PowerDesigner [3] is a complex tool for modelling and transforming ...

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  9. File:ER model.svg - Wikipedia

    en.wikipedia.org/wiki/File:ER_model.svg

    English: This Erdős–Rényi model is generated with N=5 nodes. For each edge in the complete graph formed by all N nodes, a random number is generated and compared to a given probability. If the random number is greater than p, an edge is formed on the model.