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Dia has special objects to help draw entity-relationship models, Unified Modeling Language (UML) diagrams, flowcharts, network diagrams, and simple electrical circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of Scalable Vector Graphics (SVG) to draw the shape.
General-purpose freeware diagram editor; Can be used to draw different kinds of diagrams: flowcharts, computer network diagrams, UML diagrams, BPMN diagrams, mind maps, organization charts, entity relationship diagrams and many others; Mind42: Proprietary: Mind mapping: Web browser: Yes Yes Yes Browser-based collaborative web application
It is very easy to work with for drawing schematics. It is close to being an ideal tool for drawing schematics for use in documentation. It has some nice features: Export schematics and individual diagrams to SVG, PNG, JPG, JPEG, PDF, and PDF+Latex, EPS (Inkscape required).
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).
It is not recommended to fit the whole data model on a single diagram. Draw many simple diagrams instead. The same class (table) can appear several times on the same diagram. Use the following standard symbols to indicate the type of the relationship. One-to-one: a simple line. One-to-many, two-way: a line with a "paw". One-to-many, one-way: an ...
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.
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Entity-relationship diagram. Add languages. Add links. Article; ... Download as PDF; Printable version ... From Wikipedia, the free encyclopedia. Redirect page ...
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