Book Image

RavenDB 2.x Beginner's Guide

By : Khaled Tannir
Book Image

RavenDB 2.x Beginner's Guide

By: Khaled Tannir

Overview of this book

RavenDB is a second generation document database written in .NET, offering a flexible data model designed to address requirements coming from real-world systems. It is different from the other document databases around, as with RavenDB you can get up and running in a few minutes, and that includes grasping all the basics. It allows you to build high-performance, low-latency applications with ease and efficiency.RavenDB 2.x Beginner's Guide introduces RavenDB concepts and teaches you everything, right from installing RavenDB, to creating documents, and querying indexes. This book will help you take advantage of powerful, document-oriented NoSQL databases and build a solid foundation on which you can create your .NET applications. This book presents RavenDB, the .NET document-oriented NoSQL database, through a series of clear and practical exercises that will help you to take advantage of this database server. The book starts off with an introduction to RavenDB and its Management Studio. You will then move ahead and learn how to quickly and efficiently build high performance, NoSQL document-oriented .NET applications using the .NET client API or the HTTP REST API. Next, Dynamic and static indexes that use map/reduce to process datasets are covered. You will then see how to create and query these indexes, with the help of detailed examples. You will also learn how to deploy your RavenDB server in a production environment and how to optimize and secure it.With numerous practical examples, RavenDB 2.x Beginner's Guide teaches you everything you need to know for building high performance .NET document-oriented NoSQL databases.
Table of Contents (21 chapters)
RavenDB 2.x Beginner's Guide
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – creating an Index


You will create your first Index using the Management Studio's Indexes screen.

  1. In the Management Studio, select the Indexes tab and click on it to display the Indexes screen.

  2. Click on the New Index button in the toolbar to open the Edit Index screen.

  3. Name the new index TotalOrdersPerCustomer.

  4. In the Maps section, enter the following code snippet:

    from order in docs.Orders
    select new {CustomerId = order.CustomerId,TotalCost = order.Units * order.UnitCost}
  5. Click on the Save Index button to save the index which will appear in the available indexes list.

    Note

    The Management Studio will not save the index if it detects an error in the LINQ query.

  6. Click on the Indexes link to return to the Indexes screen.

What just happened?

We created our first index named TotalOrdersPerCustomer using the Management Studio. This index contains, for now, a single Map function which is a LINQ query that returns a two-column dataset, one of which is a calculated column.

The first column...