Vijayshankar Raman  Vijayshankar  Raman photo       

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Master Inventor. Compression, Query Processing, Query Processing over Compressed Data, Query Optimization
Almaden Research Center, San Jose, CA, USA


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More information:  List of Publications at DBLP


I work in the database group at IBM Almaden on high performance data management. I started the Blink (now BLU) research project on query processing over compressed data, that has now been productized as DB2 with BLU Acceleration, and also the Informix Warehouse Accelerator. Previously I worked on adaptive and interactive query processing and on data cleansing.

Before joining IBM, I studied under Prof. Joseph M. Hellerstein at University of California, Berkeley for my Ph.D, and before that at IIT Madras.

Full results for paper on memory-efficient hash joins. Below are two tarballs:



Technical Areas