This tech note will describe the implementation of 4D Open for 4D in the Enterprise Data Module (EDM), the core Module of the DataGrid application. As you recall from the earlier tech notes in this series, EDM is implemented using two conceptual layers: the high level, and the low level. The high level was discussed in Tech Note #3 of this series. This tech note will discuss one of the low levels, the 4D Open level. However, since the focus is squarely on 4D Open, much of this tech note can be of use to people who are not familiar with DataGrid and EDM.

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