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Exercise No. 1: Hierarchical Organisation Structure

Transfer the following verbal description into an ERM

a) A group (Group-ID) has several companies (Comp-ID), whereas a company belongs to one group.

b) Companies are connected by a hierarchical structure; each subsidiary is assigned to exactly one company of the next higher hierarchy level, the parent company.

c) Each company has several plants (Plant-ID); a plant belongs to one company only.

d) A plant produces many items (Item-#). An item is only produced in one of the plants.

Solution (Part 1)

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