Add DunderMifflin test database

Author: ktaranov

Sample_Databases/README.md

@@ -27,6 +27,7 @@ Some databases you can download from this repository: https://rebrand.ly/sample-
 | [Northwind Database][1]                 |               2000 | OLTP     |        - |        ? |           ? |
 | [Pub Database][1]                       |               2000 | OLTP     |        - |        ? |           ? |
 | [Oracle Employee Database]              |               2000 | OLTP     |        3 |        4 |           2 |
+| [DunderMifflin]                         |                  ? | OLTP     |        - |        - |           ? |
 
 [StackOverflow 2010 Database]:https://www.brentozar.com/archive/2015/10/how-to-download-the-stack-overflow-database-via-bittorrent/
 [StackOverflow Database]:https://www.brentozar.com/archive/2015/10/how-to-download-the-stack-overflow-database-via-bittorrent/
@@ -48,6 +49,7 @@ Some databases you can download from this repository: https://rebrand.ly/sample-
 [AdventureWorks Tabular Model]:https://github.com/Microsoft/sql-server-samples/releases/download/adventureworks-analysis-services/adventure-works-tabular-model-1200-full-database-backup.zip
 [1]:https://github.com/Microsoft/sql-server-samples/tree/master/samples/databases/northwind-pubs
 [Oracle Employee Database]:https://github.com/ktaranov/sqlserver-kit/blob/master/Sample_Databases/Oracle_Employee_Database.sql
+[DunderMifflin]:https://github.com/tdmitch/DunderMifflin
 
 ## Datasets
  - [Data.gov](https://www.data.gov/)