However, if you are searching for free and open source data modeling tools and software, you might be disappointed with the low number of available database design systems. Of course, there is a huge list of data modelers and diagram creation programs to help you structure your data flow. Features of Dia include multiple-page printing, export to many formats (EPS, SVG, CGM and PNG), and the ability to use custom shapes created by the user as simple XML descriptions. Dia is useful for drawing UML diagrams, network maps, and flowcharts.ĭia can be used by many people in a variety of industries.Ī systems engineer can create SADT diagrams for system analysis and design.Ī requirements engineer can compose e.g. RE-KAOS, RE-Jackson or RE-I* diagrams.Ī software developer can create UML diagrams of various types and extend them with the flexibility of a general purpose diagram tool.Ī database designer can represent data relations with ER diagrams.Ī control engineer may draw Cybernetics diagrams.Ī computer programmer can create a flow chart to show the execution path of a program.Ī network administrator can create a diagram to model the company's company network.Īn electrical engineer may use Dia to create a diagram to show how a circuit works.Īn mechanical engineer may design some Hydraulic or Pneumatic diagrams.You surely know how complicated and hard-to-manage can be data nowadays. Its interface and features are loosely patterned after the Windows program Visio. Dia is an application for creating technical diagrams.

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