The Schema namespace provides classes and methods for schema metadata information.

The following are the classes in the Schema namespace.

1. ChildRelationship Class 
2. DataCategory Class 
3. DataCategoryGroupSobjectTypePair Class 
4. DescribeColorResult Class 
5. Describe​DataCategoryGroupResult Class 
6. Describe​DataCategoryGroupStructureResult Class 
7. DescribeFieldResult Class 
8. DescribeIconResult Class 
9. DescribeSObjectResult Class 
10. DescribeTabResult Class 
11. DescribeTabSetResult Class 
12. DisplayType Enum 
13. FieldSet Class 
14. FieldSetMember Class 
15. PicklistEntry Class 
16. RecordTypeInfo Class
17. SOAPType Enum 
18. SObjectField Class 
19. SObjectType Class