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Motivation (OLAP)
JoeWinter edited this page Sep 18, 2014
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[Table of Contents](https://github.com/dell-oss/Doradus/wiki/OLAP Databases: Table-of-Contents) | Previous | Next
OLAP Data Model: Motivation
Doradus began as a REST API with Lucene-like searching on top of Cassandra. As a result, its _scalar_ data model is similar to Lucene's: named data fields are typed as text, numbers, timestamps, etc. But as Doradus evolved, we wanted a strong linking feature, so we added bi-directional relationships via _links_. We also wanted to leverage the best of the NoSQL world: horizontal scalability, idempotent updates, etc. The result is a unique blend of features from Lucene, graph databases, and NoSQL databases.
Technical Documentation
[Doradus OLAP Databases](https://github.com/dell-oss/Doradus/wiki/Doradus OLAP Databases)
- Architecture
- OLAP Database Overview
- OLAP Data Model
- Doradus Query Language (DQL)
- OLAP Object Queries
- OLAP Aggregate Queries
- OLAP REST Commands
- Architecture
- Spider Database Overview
- Spider Data Model
- Doradus Query Language (DQL)
- Spider Object Queries
- Spider Aggregate Queries
- Spider REST Commands
- [Installing and Running Doradus](https://github.com/dell-oss/Doradus/wiki/Installing and Running Doradus)
- [Deployment Guidelines](https://github.com/dell-oss/Doradus/wiki/Deployment Guidelines)
- [Doradus Configuration and Operation](https://github.com/dell-oss/Doradus/wiki/Doradus Configuration and Operation)
- [Cassandra Configuration and Operation](https://github.com/dell-oss/Doradus/wiki/Cassandra Configuration and Operation)