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161
Estimating Answer Sizes for XML Queries
- In Proceedings of the 8th International Conference on Extending Database Technology (EDBT
, 2002
"... Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimization. Even at the user level, predictions of the total result size can be valuable in “next-step ” decisions, such as ..."
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Cited by 59 (9 self)
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Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimization. Even at the user level, predictions of the total result size can be valuable in “next-step ” decisions
Towards A Deductive Object-Oriented Database Language
- Data & Knowledge Engineering
, 1990
"... A language for databases with sets, tuples, lists, object identity and structural inheritance is proposed. The core language is logic-based with a fixpoint semantics. Methods with overloading and methods evaluated externally providing extensibility of the language are considered. Other important iss ..."
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Cited by 59 (0 self)
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issues such as updates and the introduction of explicit control are discussed. 1 INTRODUCTION The success of the relational database model [19, 38, 27] is certainly due to technological advances such as fast query processing or reliable concurrency control. However, we believe that a major factor
Efficient provenance storage
- In Proceedings of the ACM International Conference on Management of Data (SIGMOD
, 2008
"... As the world is increasingly networked and digitized, the data we store has more and more frequently been chopped, baked, diced and stewed. In consequence, there is an increasing need to store and manage provenance for each data item stored in a database, describing exactly where it came from, and w ..."
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Cited by 53 (4 self)
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techniques: a family of factorization processes and two methods based on inheritance, to decrease the amount of storage required for provenance. We have used the techniques described in this work to significantly reduce the provenance storage costs associated with constructing MiMI [22], a warehouse of data
Outerjoins as Disjunctions
"... The outerjoin operator is currently available in the query language of several major DBMSs, and it is included in the proposed SQL2 standard draft. However, "associativity problems" of the operator have been pointed out since its introduction. In this paper we propose a shift in the int ..."
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Cited by 42 (1 self)
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Processing; [H.3.3] Information Search and Retrieval, Query Formulation; [G.2.2] Graph Theory; [F.2.2] Nonnumerical algorithms and problems. Keywords and Phrases: Outerjoin, Query Graph, Query Formulation and Processing. Note: The author had an ERCIM postdoctoral fellowship while conducting this work. 1
QCluster: Relevance Feedback Using Adaptive Clustering for Content Based Image Retrieval
- Proc. ACM SIGMOD
, 2003
"... The learning-enhanced relevance feedback has been one of the most active research areas in content-based image re-trieval in recent years. However, few methods using the rel-evance feedback are currently available to process relatively complex queries on large image databases. In the case of complex ..."
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Cited by 42 (0 self)
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The learning-enhanced relevance feedback has been one of the most active research areas in content-based image re-trieval in recent years. However, few methods using the rel-evance feedback are currently available to process relatively complex queries on large image databases. In the case
Pharos: A Scalable Distributed Architecture for Locating Heterogeneous Information Sources
- In In Proceedings of the 6th International Conference on Information and Knowledge Management
, 1996
"... This paper presents the design of Pharos: a scalable distributed architecture for locating heterogeneous information sources. The system incorporates a hierarchical metadata structure into a multi-level retrieval system. Queries are resolved through an iterative decision-making process. The first st ..."
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Cited by 38 (7 self)
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This paper presents the design of Pharos: a scalable distributed architecture for locating heterogeneous information sources. The system incorporates a hierarchical metadata structure into a multi-level retrieval system. Queries are resolved through an iterative decision-making process. The first
Query Processing in Relationlog
- In Proceedings of the 10th International Conference on Database and Expert System Applications (DEXA '99
, 1999
"... . Relationlog is a persistent deductive database system that supports eective storage, ecient access and inference of large amounts of data with complex structures. In this paper, we describe query processing in the Relationlog system. In particular, we illustrate the extended semi-naive and mag ..."
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Cited by 2 (2 self)
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. Relationlog is a persistent deductive database system that supports eective storage, ecient access and inference of large amounts of data with complex structures. In this paper, we describe query processing in the Relationlog system. In particular, we illustrate the extended semi
Exploring Power-Performance Tradeoffs in Database Systems
"... Abstract — With the total energy consumption of computing systems increasing in a steep rate, much attention has been paid to the design of energy-efficient computing systems and applications. So far, database system design has focused on improving performance of query processing. The objective of t ..."
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Cited by 30 (7 self)
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Abstract — With the total energy consumption of computing systems increasing in a steep rate, much attention has been paid to the design of energy-efficient computing systems and applications. So far, database system design has focused on improving performance of query processing. The objective
Approximate Spatial Query Processing Using Raster Signatures
- In: Proceedings of VI Brazilian Symposium on GeoInformatics
, 2004
"... Abstract: Nowadays, the database characteristics, such as the huge volume of data, the complexity of the queries, and even the data availability, can demand minutes or hours to process a query. On the other hand, in many cases it may be enough to the user to get a fast approximate answer, since it h ..."
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Cited by 2 (2 self)
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Abstract: Nowadays, the database characteristics, such as the huge volume of data, the complexity of the queries, and even the data availability, can demand minutes or hours to process a query. On the other hand, in many cases it may be enough to the user to get a fast approximate answer, since
The central question in entrepreneurial cognition research 2007. Entrepreneurship Theory and Practice,
, 2007
"... In this article, we take note of advances in the entrepreneurial cognition research stream. In doing so, we bring increasing attention to the usefulness of entrepreneurial cognition research. First, we offer and develop a central research question to further enable entrepreneurial cognition inquiry ..."
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Cited by 42 (4 self)
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aspects of a simple four-word query: "How do entrepreneurs think?" Whether or not researchers are probing individual differences and why some people make better entrepreneurs than others, studying how 2 ENTREPRENEURSHIP THEORY and PRACTICE entrepreneurs develop unique knowledge structures
Results 1 - 10
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