The ER-diagram shows the entities in the IMPULS3 model and their relations.

The arrows show the relation to an entity’s source (from child to parent; because every child has a parent, but not every child is a parent).
References
⌊ER diagram⌋
Information Technology in Business
The ER-diagram shows the entities in the IMPULS3 model and their relations.
The arrows show the relation to an entity’s source (from child to parent; because every child has a parent, but not every child is a parent).
References
⌊ER diagram⌋