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Visual DataFlex is a [[4GL]] [[programming language]] and IDE/Studio targeted at application developers needing to rapidly create Windows client-server and web [[database]] business applications.
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Visual DataFlex’s [[Multitier architecture|multi-tier (N-tier) application architecture]] provides a well-defined structure for developers to create Windows and Web applications, Web Services and [[Service-oriented architecture|Service Oriented Architectures (SOA)]].
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===Database Rules & Application Logic Tier===
In Visual DataFlex, an application’s database and business rules are defined in and managed by "Data Dictionaries." Data Dictionaries are a middle tier between the application’s database and user interface that:
* Provide applications with an extended, application-specific information that is not part of the physical database. It extends the database.
* Protect the data – Data Dictionaries define and validate allowable data additions and updates.
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Visual DataFlex user interfaces can be developed for Windows desktop, Web browser and mobile environments. Similarly structured user interface frameworks for Windows and web connect to Data Dictionaries to complete the application stack.
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[http://www.DataAccess.com Data Access Worldwide] of Miami, USA is the developer and publisher of the Visual DataFlex software suite and language. The company originally started with the character-based application development environment for early DOS and multi-user networks. The first Windows product was DataFlex for Windows, which was followed by Visual DataFlex 4.0 in 1997. Since then, Visual DataFlex has been enhanced through numerous revisions and platform expansions including browser-based web applications that offer functionality similar to Windows desktop applications. With version 18.0's release in 2014, the company re-branded the product to "DataFlex" with several product families under the same brand. Data Access Worldwide’s software development teams are based in Miami, Florida U.S.A. and Hengelo, The Netherlands.
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{{Reflist}}
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* [http://www.dataaccess.com/dataflex/ Latest DataFlex Product Information]
* [http://support.dataaccess.com/forums/ Support Forums]
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