Entity Relationship Diagram
ERD of a multi-tenant database that records customers and some customer information types like temperature, humidity, etc. The most important thing is that it is MULTI-TENANT and it can add INFORMATION TYPES.
Use Case 1:
I am a customer A and I want to add a temperature field and I am the only one who can see it
Use Case 2:
I am a customer B and I want to add a humidity field and I am the only one who can see it
Use Case 3:
I am the system administrator and I can modify temperature field created by customer A and expose it to customer B.
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