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LPAR
2010
Springer
8 years 11 months ago
Speed-Up Techniques for Negation in Grounding
Abstract. Grounding is the task of reducing a first order formula to ground formula that is equivalent on a given universe, and is important in many kinds of problem solving and re...
Amir Aavani, Shahab Tasharrofi, Gulay Ünel, E...
JAPLL
2010
98views more  JAPLL 2010»
8 years 11 months ago
On database query languages for K-relations
The relational model has recently been extended to so-called K-relations in which tuples are assigned a unique value in a semiring K. A query language, denoted by RAC K , similar ...
Floris Geerts, Antonella Poggi
APLAS
2010
ACM
9 years 1 months ago
Data Structure Fusion
We consider the problem of specifying data structures with complex sharing in a manner that is both declarative and results in provably correct code. In our approach, abstract data...
Peter Hawkins, Alex Aiken, Kathleen Fisher, Martin...
AMW
2009
9 years 2 months ago
Identifying Algebraic Properties to Support Optimization of Unary Similarity Queries
Conventional operators for data retrieval are either based on exact matching or on total order relationship among elements. Neither of them is appropriate to manage complex data, s...
Mônica Ribeiro Porto Ferreira, Agma J. M. Tr...
TDM
2004
203views Database» more  TDM 2004»
9 years 2 months ago
Relational Algebra: Mother Tongue - XQuery: Fluent
This work may be seen as a further proof of the versatility of the relational database model. Here, we add XQuery to the catalog of languages which RDBMSs are able to "speak&...
Torsten Grust, Jens Teubner
CSREASAM
2006
9 years 2 months ago
Firewall Rules Analysis
- In this paper, we propose a method to analyze the firewall policy or rule-set using Relational Algebra and Raining 2D-Box Model. It can discover all the anomalies in the firewall...
Thawatchai Chomsiri, Chotipat Pornavalai
IQIS
2007
ACM
9 years 2 months ago
On the performance of one-to-many data transformations
Relational Database Systems often support activities like data warehousing, cleaning and integration. All these activities require performing some sort of data transformations. Si...
Paulo J. F. Carreira, Helena Galhardas, Joã...
EDBTW
2006
Springer
9 years 3 months ago
The Importance of Algebra for XML Query Processing
Abstract. Relational algebra has been a crucial foundation for relational database systems, and has played a large role in enabling their success. A corresponding XML algebra for X...
Stelios Paparizos, H. V. Jagadish
VLDB
1987
ACM
100views Database» more  VLDB 1987»
9 years 4 months ago
Optimization of Systems of Algebraic Equations for Evaluating Datalog Queries
A Datalog program can be translated into a system of fixpoint equations of relational algebra; this paper studies how such a system can be solved and optimized for a particular qu...
Stefano Ceri, Letizia Tanca
DBPL
1991
Springer
98views Database» more  DBPL 1991»
9 years 4 months ago
Structural Recursion as a Query Language
We propose a programming paradigm that tries to get close to both the semantic simplicity of relational algebra, and the expressive power of unrestricted programming languages. It...
Val Tannen, Peter Buneman, Shamim A. Naqvi
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