You design a data integration and need to determine when to import data or connect to external data. 
Please select the correct statements about the Dataverse data import and integration.

Answer options:

A.You can create and write data to virtual tables
B.You can use custom connectors with model-driven apps
C.You cannot enable field security for the virtual table
D.You can batch import data without API limits
E.You map the virtual entities with the external entities using GUID primary key

Correct Answers: A, C and E 
Dataverse provides several tools to import and export data. They include Data Import Wizard, Power Query, Power Automate, Dataflows, and others. A Solution Architect always needs to assess when to bring data into the Dataverse or connect to an external data source. Dataverse provides virtual table functionality for connection to the external data sources without importing data. 
The model-driven app uses only the Dataverse as a data source, including the integration with external data. For example, developers can embed a canvas app in a model-driven app. Canvas apps can use any of the 300+ connectors that Power Platform provides. A virtual table is another possibility to bring data from other systems into model-driven apps without data storing and replication in the Dataverse.
Option A is correct because users with appropriate table access can create and write data to the virtual table. The records will be updated on the source data side in almost no time.
Option C is correct because users cannot enable field security for virtual tables. This is because the virtual tables have organization ownership and do not support the record type security. Also, the virtual table’s columns cannot have calculated or rollup attributes. These types of operations must be done on the external data side.
Option E is correct because the virtual table uses the GUID primary key from the external data entities for the Dataverse mapping purposes.
Option B is incorrect because model-driven apps can use only the Dataverse as a data source, including integrating with external data.
Option D is incorrect because all Dataverse API operations, including batch data import, are subject to the API entitlement and service protection limits.
For more information about the Dataverse import and virtual tables, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/virtual-entities/get-started-ve
https://docs.microsoft.com/en-us/powerapps/maker/data-platform/create-edit-virtual-entities
https://docs.microsoft.com/en-us/powerapps/user/import-data
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/api-limits