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The image shows a data model on information management in the MES.

The MES must pass on all information needed within the production flow to people (mainly workers) and machines/equipment on time. This information consists mainly of process instructions and work instructions. In addition, documents that control or accompany the production flow (e.g., accompanying documents) must be created and managed.

Since this information is generally relevant for quality, the respective documents or data sets also must be stored in a change protocol along with versions and changes with date/time and respective user.