Informix under CONTROL: Online query processing

The goal of the CONTROL project at Berkeley is to develop systems for inter active analysis of large data sets. We focus on systems that provide users with iteratively refining answers to requests and online control of process ing, thereby tightening the loop in the data analysis process. This paper p resents the database-centric subproject of CONTROL: a complete online query processing facility, implemented in a commercial Object-Relational DBMS fr om Informix. We describe the algorithms at the core of the system, and deta il the end-to-end issues required to bring the algorithms together and deli ver a complete system.