Creating resources
As we have seen before, entities inside DocumentDB are called resources. The way resources are managed is a uniform process, and this makes understanding these CRUD operations easier. This section will discuss how to create resources inside your database.
Creating a collection
Before you can create and update documents, you first need to have a collection available. In Chapter 1, Getting Started with DocumentDB, we saw how a collection can be created straight from the Azure portal. In this section, we are going to create one by using the .NET SDK using Visual Studio 2013 and C#.
The following code snippet shows how you can check if a collection already exists; it also demonstrates how a collection can be created:
//prerequisite before we can work. We need a DocumentClient and a Database.
DocumentClient client = new DocumentClient(new Uri(docDBUri), key);
Database database = client.CreateDatabaseQuery().Where(d => d.Id == "devicehub").AsEnumerable().First...
