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    PODS
    1999
    ACM
    133views Database» more  PODS 1999»
    Processing and Optimization of Multiway Spatial Joins Using R-Trees
    13 years 8 months ago
    Processing and Optimization of Multiway Spatial Joins Using R-Trees
    Download  www.cs.ust.hk
    One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...
    Dimitris Papadias, Nikos Mamoulis, Yannis Theodori...
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    PODS
    1999
    ACM
    160views Database» more  PODS 1999»
    Queries with Incomplete Answers over Semistructured Data
    13 years 8 months ago
    Queries with Incomplete Answers over Semistructured Data
    Download  www.dbnet.ece.ntua.gr
    Semistructured data occur in situations where information lacks a homogeneous structure and is incomplete. Yet, up to now the incompleteness of information has not been re ected b...
    Yaron Kanza, Werner Nutt, Yehoshua Sagiv
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    PODS
    1999
    ACM
    124views Database» more  PODS 1999»
    Substring Selectivity Estimation
    13 years 8 months ago
    Substring Selectivity Estimation
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    H. V. Jagadish, Raymond T. Ng, Divesh Srivastava
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    PODS
    1999
    ACM
    79views Database» more  PODS 1999»
    Hypertree Decompositions and Tractable Queries
    13 years 8 months ago
    Hypertree Decompositions and Tractable Queries
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    Georg Gottlob, Nicola Leone, Francesco Scarcello
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    PODS
    1999
    ACM
    95views Database» more  PODS 1999»
    Minimal Data Upgrading to Prevent Inference and Association
    13 years 8 months ago
    Minimal Data Upgrading to Prevent Inference and Association
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    Despite advances in recent years in the area of mandatory access control in database systems, today's information repositories remain vulnerable to inference and data associa...
    Steven Dawson, Sabrina De Capitani di Vimercati, P...
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    PODS
    1999
    ACM
    105views Database» more  PODS 1999»
    Rewriting of Regular Expressions and Regular Path Queries
    13 years 8 months ago
    Rewriting of Regular Expressions and Regular Path Queries
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    Diego Calvanese, Giuseppe De Giacomo, Maurizio Len...
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    PODS
    1999
    ACM
    89views Database» more  PODS 1999»
    Type Inference in the Polymorphic Relational Algebra
    13 years 8 months ago
    Type Inference in the Polymorphic Relational Algebra
    Download  reference.kfupm.edu.sa
    We give a polymorphic account of the relational algebra. We introduce a formalism of \type formulas" speci cally tuned for relational algebra expressions, and present an algo...
    Jan Van den Bussche, Emmanuel Waller
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    PODS
    1999
    ACM
    121views Database» more  PODS 1999»
    Tracking Join and Self-Join Sizes in Limited Storage
    13 years 8 months ago
    Tracking Join and Self-Join Sizes in Limited Storage
    Download  theory.stanford.edu
    Query optimizers rely on fast, high-quality estimates of result sizes in order to select between various join plans. Selfjoin sizes of relations provide bounds on the join size of...
    Noga Alon, Phillip B. Gibbons, Yossi Matias, Mario...
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    PODS
    1999
    ACM
    88views Database» more  PODS 1999»
    On Two-Dimensional Indexability and Optimal Range Search Indexing
    13 years 8 months ago
    On Two-Dimensional Indexability and Optimal Range Search Indexing
    Download  www.ittc.ku.edu
    Lars Arge, Vasilis Samoladas, Jeffrey Scott Vitter
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    PODS
    1999
    ACM
    97views Database» more  PODS 1999»
    On Views and XML
    13 years 8 months ago
    On Views and XML
    Download  homepages.inf.ed.ac.uk
    Serge Abiteboul
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