Question
A Power Platform solution includes the following Web API call:
```http
GET http://contoso.crm.dynamics.com/api/data/v9.1/RelationshipDefinitions?$select=SchemaName
```
You need to explain what this line of code is doing.
What does the code do?
- A. Retrieve the list of relationships between tables. Correct
- B. Retrieve a list of tables that are related to each other.
- C. Retrieve a list of one-to-many relationships with other tables.
- D. Retrieve a list of tables that have more than one relationship.
- E. Retrieve a list of many-to-many relationships with other tables.
Explanation
The RelationshipDefinitions entity set holds the definitions of the relationships between tables in Dataverse, and $select=SchemaName returns the schema name of every relationship. It returns relationships, not tables, so the options about lists of tables are wrong. It also covers every relationship type: to get only one-to-many or only many-to-many relationships, you would have to cast the query, for example RelationshipDefinitions/Microsoft.Dynamics.CRM.OneToManyRelationshipMetadata.
