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Data Providers
Servoy's "Data Providers" are the atomic units of the data binding layer. A Data Provider holds an individual data value which may be bound to both User Interface elements, as well as back-end resources. Thus, Data Providers are the link between the user experience and the raw data.
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Other than programming scope, the only difference between the two is that globals can be used as keys in relations.
Relations
Relations, at design-time model associations between two tables by joining on key data providers. At runtime, a relation becomes a context-sensitive programming reference to related data. Thus, relations are simple, but powerful mechanisms to display, edit and search for data from any context. They can be used, not only to model simple database relations, but also to create sophisticated filters and searches.
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