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NoSQL Data Models

NoSQL Data Models

By : Olivier Pivert
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NoSQL Data Models

NoSQL Data Models

By: Olivier Pivert

Overview of this book

Big Data environments are now to be handled in most current applications, this book addresses the latest issues and hurdles that are encountered in such environments. The book begins by presenting an overview of NoSQL languages and systems. Then, you’ll evaluate SPARQL queries over large RDF datasets and devise a solution that will use the MapReduce framework to process SPARQL graph patterns. Next, you’ll handle the production of web data, generate a set of links between two different datasets and overcome different heterogeneity problems. Moving ahead, you’ll take the multi-graph based approach to overcome challenges faced by the RDF data management community. Finally, you’ll deal with the flexible querying of graph databases and textual data management. By the end of this book, you’ll have gathered essential information on big data challenges faced by NoSQL databases.
Table of Contents (11 chapters)
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Preface
8
List of Authors
9
Index
10
End User License Agreement

2.2. RDF and SPARQL

2.2.1. RDF framework and data model

The Resource Description Framework (RDF) is a family of W3C specifications for linking and sharing data on the Web. RDF was originally designed as a metadata model for describing and linking any kind of web resources, for example web pages, images, audio and video files, and services. It includes a graph-oriented abstract data model with optional schema definitions and a high-level declarative query language called SPARQL. RDF shares many features of semi-structured data models [ABI 00] for modeling and structuring heterogeneous information in open environments such as the Web. In particular, RDF data graphs can be produced without a predefined schema and SPARQL allows querying both schema and instance information simultaneously.

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Figure 2.1. RDF graph. For a color version of this figure, see www.iste.co.uk/pivert/nosql.zip

EXAMPLE 2.1.– Figure 2.1 shows an RDF graph of French kings and queens. Following the principle...

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NoSQL Data Models
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