(1) Describing the transaction
Using the first approach, you check that all the information (entities, relationships, and their attributes) required by each transaction is provided by the model, by documenting a description of each transaction’s requirements.
(2) Using transaction pathways
The second approach to validating the data model against the required transactions involves representing the pathway taken by each transaction directly on the ER diagram. Clearly, the more transactions that exist, the more complex this diagram would become, so for readability you may need several such diagrams to cover all the transactions.
kalvinspartan answered the question on July 9, 2018 at 19:19
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