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Visual DataFlex

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Visual DataFlex is a programming language by Data Access, targeted at creating database and client-server type programs.

Architecture

Visual DataFlex has a 3-layer architecture:

Bottom layer
Tables at this level represent customer information. Data dictionaries for each table define the rules for saving, editing, deleting, or finding a customer.
Middle layer
Tables at this level represent orders to customers. A Data Dictionary Connectivity Object Tree defines how tables relate to each other, and ensures that all business rules of the connected tables are in force and validate.
Top layer
A graphical interface (GUI) that allows users to enter, find, create, modify, or delete data.
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