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» Database Support for Path Query Functions
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COMPSAC
1996
IEEE
13 years 11 months ago
A Logic Database System with Extended Functionality
We present the architecture and design details of a logic database system that extends functionality in a number of ways. The system supports indefinite (non-Horn) facts in extens...
Sang-goo Lee, Dong-Hoon Choi, Sang-Ho Lee
DBPL
1997
Springer
87views Database» more  DBPL 1997»
13 years 11 months ago
Incremental Recomputation of Recursive Queries with Nested Sets and Aggregate Functions
We examine the power of incremental evaluation systems that use an SQL-like language for maintaining recursively-de ned views. We show that recursive queries such as transitive clo...
Leonid Libkin, Limsoon Wong
VLDB
2004
ACM
161views Database» more  VLDB 2004»
14 years 7 months ago
Supporting top-k join queries in relational databases
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....
Ihab F. Ilyas, Walid G. Aref, Ahmed K. Elmagarmid
DBSEC
2007
116views Database» more  DBSEC 2007»
13 years 9 months ago
Provably-Secure Schemes for Basic Query Support in Outsourced Databases
In this paper, we take a closer look at the security of outsourced databases (aka Database-as-the-Service or DAS), a topic of emerging importance. DAS allows users to store sensit...
Georgios Amanatidis, Alexandra Boldyreva, Adam O'N...
SIGMOD
2008
ACM
203views Database» more  SIGMOD 2008»
14 years 7 months ago
Querying continuous functions in a database system
Many scientific, financial, data mining and sensor network applications need to work with continuous, rather than discrete data e.g., temperature as a function of location, or sto...
Arvind Thiagarajan, Samuel Madden