Open Data Protocol is a web protocol for accessing information via services. It is built upon technologies such as XML and JSON. The main component for building the OData service on .NET Framework is WCF Data Service. OData service can support different data source models including ADO.NET Entity Framework. LINQ to SQL etc. This post outlines the steps to creating an OData service on the .NET Framework through WCF Data service and ADO.NET Entity Framework data model.