QB4OLAP is a Vocabulary for Business Intelligence over Linked Data.

It is an extension of the DataCube vocabulary that allows to represent OLAP cubes in RDF, and to implement OLAP operators (such as Roll-up, Slice, and Dice) as SPARQL queries directly on this RDF representation.

#The vocabulary

You can find the current version of the vocabulary in Turtle format in this repository. The latest version (v1.3) is available here. Previous stable version of the vocabulary (v1.2) is available here.

The main improvement in v1.3 is the ability to represent custom rollup relationships.

We have defined the following purls to refere to each version:

• Version 1.2: http://purl.org/qb4olap/cubes_v1.2
• Version 1.3: http://purl.org/qb4olap/cubes

We suggest to use dcterms:conformsTo property to indicate which version of QB4OLAP is used in a dataset.

#Documentation and related resources Our wiki contains a detailed description of the elements of the vocabulary, examples of QB4OLAP in-use, and related publications.

Check our QB4OLAP-tools project to see some examples of what can be done with this vocabulary.

#Examples

The examples folder contains ttl files that represent the schema and instances of different cubes in QB4OLAP