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entity-relationship model

entity-relationship model

Purpose of E/R Model The E/R model allows us to sketch database schema designs. Includes some constraints, but not operations. Designs are pictures called entity-relationship diagrams. Later: convert E/R designs to relational DB designs. 3 Framework for E

相關軟體 Dia Diagram Editor 下載

Dia Diagram Editor is an open-source visual-editing application, which can be used to draw numerous different kinds of diagrams. It currently has special objects to help draw entity relationship diagr...

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entity-relationship model 相關資訊

  • Chapter 2: Entity-Relationship Model Entity Sets Relationship Sets Design Issues Mapping C...
    Chapter 2: Entity-Relationship Model - Shiuh-Sheng Yu's ...
    http://ssyu.im.ncnu.edu.tw
  • An entity relationship model, also called an entity-relationship (ER) diagram, is a graphi...
    entity-relationship diagram (model)
    https://www.webopedia.com
  • Introduction We have covered the concepts of relational databases in "Introduction to...
    Entity-Relationship Model - Computational Science
    https://www.wofford-ecs.org
  • Entity-Relationship Model Kuang-hua Chen Department of Library and Information Science Nat...
    Entity-Relationship Model - National Taiwan University
    http://www.lis.ntu.edu.tw
  • In software engineering, an Entity-relationship model is a conceptual model of data. Very ...
    Entity-relationship model - Simple English Wikipedia, the ...
    https://simple.wikipedia.org
  • Purpose of E/R Model The E/R model allows us to sketch database schema designs. Includes s...
    Entity-Relationship Model - Stanford University
    http://infolab.stanford.edu
  • An entity–relationship model (ER model) describes inter-related things of interest in a sp...
    Entity–relationship model - Wikipedia
    https://en.wikipedia.org
  • Entity-relationship modelling In this chapter I introduce the concepts of entity-relations...
    Introduction to Entity-relationship modelling
    http://www.inf.unibz.it
  • An entity-relationship model (ERM) is a theoretical and conceptual way of showing data rel...
    What is an Entity-Relationship Model (ER Model)? - Definitio ...
    https://www.techopedia.com
  • The entity-relationship model (or ER model) is a way of graphically representing the logic...
    What is entity-relationship model (ERM or ER model)? - Defin ...
    http://searchsqlserver.techtar