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IDEAS
2000
IEEE
108views Database» more  IDEAS 2000»
15 years 11 months ago
Plug and Play with Query Algebras: SECONDO-A Generic DBMS Development Environment
We present SECONDO, a new generic environment supporting the implementation of database systems for a wide range of data models and query languages. On the one hand, this framewor...
Stefan Dieker, Ralf Hartmut Güting
SIGMOD
2000
ACM
141views Database» more  SIGMOD 2000»
15 years 11 months ago
Counting, Enumerating, and Sampling of Execution Plans in a Cost-Based Query Optimizer
Testing an SQL database system by running large sets of deterministic or stochastic SQL statements is common practice in commercial database development. However, code defects oft...
Florian Waas, César A. Galindo-Legaria
SIGMOD
1999
ACM
127views Database» more  SIGMOD 1999»
15 years 11 months ago
An Adaptive Query Execution System for Data Integration
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three re...
Zachary G. Ives, Daniela Florescu, Marc Friedman, ...
ICMCS
1999
IEEE
131views Multimedia» more  ICMCS 1999»
15 years 11 months ago
Integrating Web Resources and Lexicons into a Natural Language Query System
The START system responds to natural language queries with answers in text, pictures, and other media. START's sentence-level natural language parsing relies on a number of m...
Boris Katz, Deniz Yuret, Jimmy J. Lin, Sue Felshin...
ER
2007
Springer
167views Database» more  ER 2007»
15 years 10 months ago
An Unified Dynamic Description Logic Model for Databases: Relational Data, Relational Operations and Queries
The paper presents an unified Description Logic (DL) model for databases. Describing database models using DLs is a fundamental problem in many areas because it turns databases to...
Guoshun Hao, Shilong Ma, Yuefei Sui, Jianghua Lv