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The horizontal scheme can be misleading, however, if it is thought that the cost of intermediate data transformation or the cost of shifting responsibility over business logic can be avoided.<ref name="Integ"/>
A '''common data format''' is an integration method to avoid every adapter having to [[data conversion|convert data]] to/from every other applications' formats, [[Enterprise application integration]] (EAI) systems usually stipulate an application-independent (or common) data format.<ref>{{Citation|title=Aircraft/Store Common Interface Control Document Format Standard|url=http://dx.doi.org/10.4271/as5609a|publisher=SAE International|access-date=2019-08-13}}</ref> The EAI system usually provides a data transformation service as well to help convert between application-specific and common formats. This is done in two steps: the adapter converts information from the application's format to the bus's common format. Then, semantic transformations are applied on this (converting zip codes to city names, splitting/merging objects from one application into objects in the other applications, and so on).
==See also==
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