Create README.md

Author: alexkeh

session-demos/2019/oow/adb-azure/README.md

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+This managed ODP.NET web application shows how to connect to an Oracle Autonomous Database from either on-premises or Azure App Service.
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+Run this application from an ASP.NET Web project. The application logs into the HR schema. Prior to running this app:
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+1) Add managed ODP.NET (Oracle.ManagedDataAccess) from the NuGet Gallery.
+2) Enter the HR password.
+3) Enter the database net service name, Easy Connect (Plus), or equivalent connection information.
+4) Enter the wallet directory and TNS_ADMIN directory of the deployment machine in the Web.config file.