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RavenDB 2.x Beginner's Guide

You're reading from  RavenDB 2.x Beginner's Guide

Product type Book
Published in Sep 2013
Publisher Packt
ISBN-13 9781783283798
Pages 356 pages
Edition 1st Edition
Languages
Author (1):
Khaled Tannir Khaled Tannir
Profile icon Khaled Tannir

Table of Contents (21) Chapters

RavenDB 2.x Beginner's Guide
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Getting Started with RavenDB RavenDB Management Studio RavenDB.NET Client API RavenDB Indexes and Queries Advanced RavenDB Indexes and Queries Advanced RavenDB Document Capabilities RavenDB Administration Deploying RavenDB Scaling-out RavenDB RavenDB Profiling RavenDB HTTP API Putting It All Together Pop Quiz Answers Index

Management Studio's Indexes screen


The Management Studio's Indexes screen displays a list of all the available indexes in the database.

An Index in RavenDB is a map or map and/or reduce/transform query written in LINQ. The Mapping expression gathers the set of data to query. The Reduction function (which is optional) will "reduce" the map by a set of criteria or transformations. Think of map simply as the selector for all the data that your query cares about. The reduce expression is then performed on the map data to group or summarize it.

In RavenDB, Indexes might have one or more map function; the Reduce function is not required but an Index might have only one Reduce function. When using the RavenDB 2.0, only one Transform function is permitted and more than one in RavenDB 2.5.

Note

RavenDB Indexes, Map/Reduce/Transform, will be discussed in detail in Chapter 5, Advanced RavenDB Indexes and Queries.

The general idea is that we create a LINQ query that returns the data elements that should...

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