JAccess Architecture
JAccess is based on a three tier architecture. The characteristics are the following:

For what concerns the second point, in the current version of the tool, a SQL statement, belonging to a service, can refer to any number of tables belonging to the same data source. Therefore, at the moment, a single service can not access two distinct data sources. But this is not a real obstacle because a service expression can have more than one service and therefore more SQL statement involving tables of different data sources.

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