fix(ingest/mssql): remove lower() method from sql_common get_db_name

docs/how/updating-datahub.md

@@ -19,6 +19,17 @@ This file documents any backwards-incompatible changes in DataHub and assists pe
 ## Next
 
 ### Breaking Changes
+- #9857 (#10773) `lower` method was removed from `get_db_name` of `SQLAlchemySource` class. This change will affect the urns of all related to `SQLAlchemySource` entities.
+
+  Old `urn`, where `data_base_name` is `Some_Database`:
+  ```
+  - urn:li:dataset:(urn:li:dataPlatform:paltform,some_database.schema.entitie,ENV)
+  ```
+  New `urn`, where `data_base_name` is `Some_Database`:
+  ```
+  - urn:li:dataset:(urn:li:dataPlatform:paltform,Some_Database.schema.entitie,ENV)
+  ```
+  Re-running with stateful ingestion should automatically clear up the entities with old URNS and add entities with new URNs, therefore not duplicating the containers or jobs. 
 
 ### Potential Downtime
 

metadata-ingestion/src/datahub/ingestion/source/sql/sql_common.py

@@ -410,7 +410,7 @@ def get_db_name(self, inspector: Inspector) -> str:
         if engine and hasattr(engine, "url") and hasattr(engine.url, "database"):
             if engine.url.database is None:
                 return ""
-            return str(engine.url.database).strip('"').lower()
+            return str(engine.url.database).strip('"')
         else:
             raise Exception("Unable to get database name from Sqlalchemy inspector")