Azure Data Storage options (free ebook)

1 - Data Storage for Modern High-Performance Business Applications
@ MSDN patterns & practices
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3 - Implementing a Relational Database
4 - Implementing a Key/Value Store
5 - Implementing a Document Database
6 - Implementing a Column-Family Database

7 - Implementing a Graph Database

8 - Building a Polyglot Solution

Azure: Pattern : Data Storage