4.3. Using a database oriented DTD In the source driven approach, the sequence and selection of the retrieved data is determined by the existence of the data in the instance. As explained in this is highly dependant on the process phase and the generator tool. For this reasons, a source driven approach is useful only if standardizes tasks (like adjusting the different link models etc.) are to be performed.
When using source driven readers it is essential that the sequence of information comes very close to the structure of the target system. Mostly it is easy for a tool to read its own output. But as soon as information appears which cannot be handled by a reader, special actions are necessary.
Therefore the source driven approach is not adequate in most of the cases.
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