Data modelling - Activity
Data mapping
Defining how information in one system corresponds to information in another
What's it for?
Makes clear which piece of information in one system belongs to which field in another.
For example…
“Cust_Name” in the old CRM is mapped to “Customer legal name” in the new one
During a CRM migration, data mapping says old field “Cust_No” becomes “CustomerID” and old status “A” becomes “Active”.
Think of it like…
Translating labels on boxes so unpackers put each item on the correct shelf