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Fundamentals of database systems (2nd ed.)
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The article was published on 1994-02-01 and is currently open access. It has received 381 citations till now.read more
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Search Engines: Information Retrieval in Practice
TL;DR: This text provides the background and tools needed to evaluate, compare and modify search engines and numerous programming exercises make extensive use of Galago, a Java-based open source search engine.
Journal ArticleDOI
OBSERVER: An Approach for Query Processing in Global Information Systems Based on Interoperation Across Pre-Existing Ontologies
TL;DR: The architecture, design and implementation of the OBSERVER system is described, which considers the use of concepts from pre-existing real world domain ontologies for describing the content of the underlying data repositories.
Patent
Systems and methods for providing a distributed file system utilizing metadata to track information about data stored throughout the system
TL;DR: The intelligent distributed file system as discussed by the authors enables the storing of file data among a plurality of smart storage units which are accessed as a single file system by using a metadata data structure to track and manage detailed information about each file, including the device and block locations of the file's data blocks.
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Heuristic and randomized optimization for the join ordering problem
TL;DR: It turns out that randomized and genetic algorithms are well suited for optimizing join expressions and generate solutions of high quality within a reasonable running time.
Journal ArticleDOI
Exploring the intellectual structures of information systems development: A social action theoretic analysis
TL;DR: In this article, the authors explore the intellectual structures upon which the field of information systems development (ISD) is cultivated, and propose a framework which reconceptualizes the field in terms of domains, orientations, object systems, and development strategies.