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Abstract: Algebraic optimization is both theoretically and practically important for query processing in (nested) relational databases. In this paper, we consider this issue and investigate some algebraic properties concerning the nested relational operators. We first examine the role of the restructuring operators nest and unnest in their interactions with extended relational operators[19]. Under certain functional and mutual data dependencies, the six nested relational equations will hold. The join... (Update)
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BibTeX entry: (Update)
@misc{ liu-query,
author = "Hong-Cheu Liu",
title = "Query Optimization for Complex Value Databases",
url = "citeseer.ist.psu.edu/401176.html" }
Citations (may not include all citations):981 Principles of Database and Knowledge-base systems (context) - Ullman - 1989
775 Foundations of Databases (context) - Abiteboul, Hull et al. - 1995
204 Querying Object-Oriented Databases - Kifer, Kim et al. - 1992
134 The Relational Model with Relation-Valued Attributes (context) - Schek, Scholl - 1986
78 Nested Relational Structures (context) - Thomas, Fischer - 1986
45 The Relational Object Model (context) - Scholl, Schek - 1990
34 A Recursive Algebra and Query Optimization for Nested Relati.. (context) - Colby - 1989
34 A New Normal Form for Nested Relations - Ozsoyoglu, Yuan - 1987
28 the power of languages for the manipulation of complex value.. - Abiteboul, Beeri - 1995
22 Non-First Normal Form Relations to Represent Hierarchically .. (context) - Abiteboul, Bidoit - 1984
21 New Data Models and Languages - the Challenge (context) - Beeri - 1992
19 Object-Oriented Database System: Promises (context) - Kim - 1993
16 Theoretical Foundation of Algebraic Optimization Utilizing U.. (context) - Scholl - 1986
15 NF: A Query Language for :1NF Relational Databases (context) - Roth, Korth et al. - 1987
14 Advances in Object-Oriented Database Systems (context) - Dogac, Ozsu et al. - 1994
13 Null Values in Nested Relational Databases (context) - Roth, Korth et al. - 1989
12 Extended Algebra and Calculus for :1NF Relational Databases (context) - Roth, Korth et al. - 1988
9 Optimization of Object-Retrieval Queries (context) - Korth - 1988
4 Multiple Paths Join for Nested Relational Databases - Liu, Ramamohanarao - 1994
3 Equivalences of Nested Relational Operators (context) - Liu, Ramamohanarao - 1992
3 Algebraic Optimization for Nested Relations (context) - Jan - 1990
2 Near-Optimum Storage Models for Nested Relations Based on Wo.. (context) - Hafez, Ozsoyoglu - 1993
2 Algebraic Equivalences Among Nested Relational Expressions - Liu, Ramamohanarao - 1994
1 An Ecient Join for Nested Relational Databases (context) - Liu, Chirathamjaree - 1996
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Safe Database Queries with External Functions - Liu, Yu (Correct)
On Translation of Complex Value Calculus Queries with.. - Liu, Xu, Chirathamjaree (Correct)
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