Add note about SQL server editions

Author: cmilesb

content/integrate/redis-data-integration/data-pipelines/prepare-dbs/aws-aurora-rds/aws-rds-sqlserver.md

@@ -18,6 +18,10 @@ weight: 3
 
 Follow the steps in the sections below to prepare a [Microsoft SQL Server on AWS RDS](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_GettingStarted.CreatingConnecting.SQLServer.html) database to work with RDI.
 
+{{< note >}}
+Change Data Capture (CDC) is not supported on SQL Server Express Edition. Only the Standard, Enterprise, and Developer editions support CDC and are supported by RDI.
+{{< /note >}}
+
 ## Create the Debezium user
 
 The Debezium connector needs a user account to connect to SQL Server. This