Overview of Orion 2.0

The Orion 2.0 system provides built-in support for uncertainty at the database level. By extending the query processing engine of PostgreSQL, Orion natively manages uncertain data modeled as arbitrary joint probability distributions. Orion 2.0 is a complete redesign and rewrite of its predecessor U-DBMS [4], and includes the following new and innovative contributions [15]:

The system architecture of Orion 2.0 is given in Figure 1. A detailed explanation of different components in the architecture is given in Section 3.

Figure 1: Orion 2.0 Architecture
Image architecture

Rohit Jain 2011-08-02