Architecting and designing > Data modeling > Components of an entity relation diagram > Creating project models and associated diagrams > When should project models be separated into different encyclopedias?
  
When should project models be separated into different encyclopedias?
There are circumstances under which you might want to separate different project models into different encyclopedias.
•If properties of data items vary from one project model to another. Changing any value of a data element in one model will change the value of the data element in any other model in which it is used.
•In the network version of SA when many users are accessing the same encyclopedia, you might experience a decrease in network performance.
See also
Creating project models and associated diagrams