Universal Quantification in Relational Databases: A Classification of Data and Algorithms

  • Ralf Rantzau
  • Leonard Shapiro
  • Bernhard Mitschang
  • Quan Wang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2287)


Queries containing universal quantification are used in many applications, including business intelligence applications. Several algorithms have been proposed to implement universal quantification efficiently. These algorithms are presented in an isolated manner in the research literature - typically, no relationships are shown between them. Furthermore, each of these algorithms claims to be superior to others, but in fact each algorithm has optimal performance only for certain types of input data. In this paper, we present a comprehensive survey of the structure and performance of algorithms for universal quantification. We introduce a framework for classifying all possible kinds of input data for universal quantification. Then we go on to identify the most efficient algorithm for each such class. One of the input data classes has not been covered so far. For this class, we propose several new algorithms. For the first time, we are able to identify the optimal algorithm to use for any given input dataset. These two classifications of input data and optimal algorithms are important for query optimization. They allow a query optimizer to make the best selection when optimizing at intermediate steps for the quantification problem.


Relational Database Hash Table Quotient Group Universal Quantification Query Optimizer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Ralf Rantzau
    • 1
  • Leonard Shapiro
    • 2
  • Bernhard Mitschang
    • 1
  • Quan Wang
    • 3
  1. 1.Computer Science DepartmentUniversity of StuttgartStuttgartGermany
  2. 2.Computer Science DepartmentPortland State UniversityOregon, PortlandUSA
  3. 3.Oracle CorporationUSA

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