Source code for a step by step guide to publish and consume a Windows Azure WCF Data Service connected to an Azure SQL Database using Azure Access Control Service claims-based authentication. The article describes best practice guidance on exposing an Azure SQL Database on Windows Azure as a WCF Data Service. At the end of this guide, you will create a Windows Azure WCF Data Service using Windows Azure Access Control Service claims-based authentication that connects to an Azure SQL Database. In addition, you will learn how to use a Windows Azure claims-based token to connect to a Windows Azure cloud service.