Results 181 to 190 of about 1,726 (214)
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Abstraction in query processing
Journal of the ACM, 1991Summary: Possible simplifications in query processing are investigated if, consciously, it is agreed to use query languages of limited power (i.e., weaker and proper sublanguages of first-order language). In such a situation, it is frequently possible to transform data in the database into some other form that is not necessarily logically equivalent to
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Query Processing in Relationlog
1999Relationlog is a persistent deductive database system that supports effective storage, effcient 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 magic-set techniques used in Relationlog.
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Query Processing and Optimization for Pictorial Query Trees
1999Methods for processingo f pictorial queries specified by pictorial query trees are presented. Leaves of a pictorial query tree correspond to individual pictorial queries while internal nodes correspond to logical operations on them. Algorithms for processing individual pictorial queries and for parsing and computingt he overall result of a pictorial ...
Aya Soffer, Hanan Samet
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21st International Conference on Data Engineering (ICDE'05), 2003
This tutorial provides a comprehensive and cohesive overview of the key research results in the area of data stream query processing, both for SQL-like and XML query languages.
Nick Koudas, Divesh Srivastava
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This tutorial provides a comprehensive and cohesive overview of the key research results in the area of data stream query processing, both for SQL-like and XML query languages.
Nick Koudas, Divesh Srivastava
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Aero: Adaptive Query Processing of ML Queries
Proceedings of the ACM on Management of DataQuery optimization is critical in relational database management systems (DBMSs) for ensuring efficient query processing. The query optimizer relies on precise selectivity and cost estimates to generate optimal query plans for execution. However, this static query optimization approach falls short for DBMSs handling machine learning (ML) queries.
Gaurav Tarlok Kakkar +4 more
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Cognitive Processes in Query Generation
2011Known-item search is the search for a specific document that is known to exist. This task is particularly important in Personal Information Management (PIM), where it is the most common search activity. A major obstacle to research in search technologies for PIM is the lack of publicly accessible test corpora.
Hauff C., Houben G.-J.
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Query Processing on Heterogeneous CPU/GPU Systems
ACM Computing Surveys, 2023Volker Markl +2 more
exaly
Robust Query Processing: A Survey
Foundations and Trends in DatabasesThe primordial function of a database system is to efficiently compute correct answers to user queries. Therefore, robust query processing (RQP), where strong numerical guarantees are provided on query performance, has been a long-standing core objective in the design of industrial-strength database engines. Unfortunately, however, RQP has proved to be
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Query Processing in Blockchain Systems: Current State and Future Challenges
Future Internet, 2022Clementine Gritti +2 more
exaly
Securing top-k query processing in two-tiered sensor networks
Connection Science, 2021Xingpo Ma, Xia Deng, Xiaoyan Kui
exaly