Merge pull request #327 from barbkess/blk3

Install notes

samples/databases/adventure-works/README.md

@@ -6,11 +6,18 @@ Database design has progressed since AdventureWorks was first published. For a s
 
 Note that AdventureWorks has not seen any significant changes since the 2012 version. The only differences between the various versions of AdventureWorks are the name of the database and the database compatibility level. To install the AdventureWorks databases with the database compatibility level of your SQL Server instance, you can install from a version-specific backup file or from an install script. 
 
+## Prerequisites
+Filestream must be installed in your SQL Server instance.
 
 ## Install from a script
 
 The install scripts create the sample database to have the database compatibility of your current version of SQL Server. Each script generates the version-specific information based on your current instance of SQL Server. This means you can use either the AdventureWorks or AdventureWorksDW install script on any version of SQL Server including CTPs, SPs, and interim releases.
 
+### Install notes
+When installing from a script, the default database name is AdventureWorks or AdventureWorksDW.  If you want the version added to the name, edit the database name at the beginning of the script.  
+
+The oltp script drops an existing AdventureWorks database, and the data warehouse script drops an existing AdventureWorksDW. If you don't want that to happen, you can update the $(DatabaseName) in the script to a different name, for example AdventureWorks-new.
+
 ### To install AdventureWorks
 
 1. Copy the GitHub data files and scripts for [AdventureWorks](https://github.com/Microsoft/sql-server-samples/tree/master/samples/databases/adventure-works/oltp-install-script) to the C:\Samples\AdventureWorks folder on your local client. 
@@ -23,8 +30,6 @@ The install scripts create the sample database to have the database compatibilit
 2. Or, [download AdventureWorksDW-data-warehouse-install-script.zip](https://github.com/Microsoft/sql-server-samples/releases/download/adventureworks/AdventureWorksDW-data-warehouse-install-script.zip) and extract the zip file to the C:\Samples\AdventureWorksDW folder.
 3. Open C:\Samples\AdventureWorksDW\instawdbdw.sql in SQL Server Management Studio and follow the instructions at the top of the file.
 
-When installing from a script, the default database name is AdventureWorks or AdventureWorksDW.  If you want the version added to the name, edit the database name at the beginning of the script.  
-
 ## Install from a backup
 
 Download backup files from [AdventureWorks samples databases](https://github.com/Microsoft/sql-server-samples/releases/tag/adventureworks) on GitHub.