Publications

• Complex Data Types in Databases: My thesis dealt with the issue of how to extend database systems to provide support for data that is logically sequential. This work is currently being extended to handle all kinds of complex data types through a new paradigm called Enhanced-ADTs.
• Query Processing and Optimization: This work studied issues in relational query processing and optimization (though some of it can be applied to non-relational databases as well). Much of this research was done at or in collaboration with, and with the support of the IBM Almaden Research Center.
• The CORAL Project: CORAL is a deductive database system developed at the University of Wisconsin. It combines a powerful declarative logic-based query language with a relational database. For more information on the CORAL project, click here .

Refereed Publications

• The Case for Enhanced Abstract Data Types Praveen Seshadri, Miron Livny and Raghu Ramakrishnan. Submitted to SIGMOD 97.
• The Design and Implementation of a Sequence Database System. Praveen Seshadri, Miron Livny and Raghu Ramakrishnan. Proceedings of the Twenty Second International Conference on Very Large Databases(VLDB),September 1996. ( longer submitted version )
• SEQ: A Model for Sequence Databases. Praveen Seshadri, Miron Livny and Raghu Ramakrishnan. Proceedings of the IEEE Conference on Data Engineering, March 1995.
• Sequence Query Processing. Praveen Seshadri, Miron Livny and Raghu Ramakrishnan. Proceedings of the ACM SIGMOD Conference on Data Management,May 1994.

My PhD Thesis

• Management of Sequence Data: compressed postscript (94 page tree-saving format).

Refereed Publications

• Cost-Based Optimization for Magic: Algebra and Implementation. Praveen Seshadri, Joseph Hellerstein, Raghu Ramakrishnan, Hamid Pirahesh, T.Y. Cliff Leung, Divesh Srivastava, Peter J. Stuckey, S. Sudarshan. SIGMOD 1996 (click here for longer version).
• Decorrelating Complex Queries. Praveen Seshadri, Hamid Pirahesh and T.Y. Cliff Leung. Proceedings of the IEEE Conference on Data Engineering, February 1996. (click here for longer version)
• Generalized Partial Indexes. Praveen Seshadri and Arun Swami. Proceedings of the IEEE Conference on Data Engineering, March 1995.

Other Publications

• System for Optimizing Correlated SQL Queries in a Relational Database using Magic Decorrelation. Praveen Seshadri, Hamid Pirahesh and T.Y.Cliff Leung. U.S. Patent Application, IBM Ref: AM9-94-057 (also available as IBM Almaden Research Report).
• Filter-Joins: Cost-Based Optimization for Magic Sets. Praveen Seshadri, Joseph Hellerstein, Raghu Ramakrishnan. University of Wisconsin Technical Report 95-1273, 1995.

Refereed Publications

• The CORAL Deductive System. Raghu Ramakrishnan, Divesh Srivastava, S.Sudarshan, and Praveen Seshadri. The VLDB Journal, Special Issue on Prototypes of Deductive Database Systems, 1994.
• CORAL++: Adding Object-Orientation to a Logic Database Language. Divesh Srivastava, Raghu Ramakrishnan, Praveen Seshadri and S.Sudarshan. Proceedings of the Nineteenth International Conference on Very Large Databases(VLDB),September 1993.
• Implementation of the CORAL Deductive Database System. Raghu Ramakrishnan, Divesh Srivastava, S.Sudarshan, and Praveen Seshadri. Proceedings of the ACM SIGMOD Conference on Data Management,May 1993.
• Explaining Program Evaluation in Deductive Systems. Tarun Arora, William Roth, Raghu Ramakrishnan, Praveen Seshadri, and Divesh Srivastava. Proceedings of the International Conference on Deductive and Object-Oriented Databases (DOOD), 1993.

Other Publications

• The CORAL User Manual - A Tutorial Introduction to CORAL. Raghu Ramakrishnan, Praveen Seshadri, Divesh Srivastava, and S.Sudarshan.