Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3730
Title: A GRAMMAR-BASED APPROACH TOWARDS UNIFYING HIERARCHICAL DATA MODELS
Authors: VANGUCHT, D
PAREDAENS, J
GYSSENS, Marc 
Issue Date: 1994
Publisher: SIAM PUBLICATIONS
Source: SIAM JOURNAL ON COMPUTING, 23(6). p. 1093-1137
Abstract: A simple model for representing the hierarchical structure of information is proposed. This model, called the grammatical model, is based on trees that are generated by grammars; the grammars describe the hierarchy of the information represented by the trees. Two methods for querying in this data model are given. The first, called the grammatical algebra, is based on a set of primitive grammar-oriented operators, the second, called the grammatical calculus, on local transformations on the trees. The semantics of both is formally defined. Decidability issues regarding the grammatical calculus are investigated. Finally, the two querying methods are proved to be equally expressive.
Notes: UNIV ANTWERP,DEPT MATH & COMP SCI,B-2610 ANTWERP,BELGIUM. INDIANA UNIV,DEPT COMP SCI,BLOOMINGTON,IN 47405.GYSSENS, M, LIMBURGS UNIV CENTRUM,DEPT WNI,UNIV CAMPUS,B-3590 DIEPENBEEK,BELGIUM.
Keywords: INFORMATION BASE; GRAMMARS; TREES; TRANSFORMATIONS; ALGEBRA; CALCULUS
Document URI: http://hdl.handle.net/1942/3730
ISI #: A1994PU46500001
Type: Journal Contribution
Appears in Collections:Research publications

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