C. Thieme and A. Siebes. Schema refinement and schema integration in object-oriented databases. Report CS-R9354, CWI, Amsterdam, The Netherlands, 1993. Home/Search Document Details and Download
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A Fuzzy Thesaurus For Semantic Integration Of Design Schemes - Mirbel (1995) (Correct)
....to this second kind of integration. The first integration tools proposed where based on the relational model [3, 18] on the entity relationship model [2, 28] on the extended entity relationship model [21, 11] and on other semantic models. Most recently, we find works on object oriented models [30, 17]. Our approach belongs to this last kind of works, being based on an object oriented model defined in [5] Throughout the scheme integration, there are some problems and conflicts. They are due to the several ways of representing the semantic of knowledge and of structuring knowledge (using the ....
C.J.E. Thieme and A.P.J.M. Siebes. Schema refinement and schema integration in object-oriented databases. Technical Report CS-R9354, Centrum voor Wiskunde en Informatica, P.O. Box 4078, 1009 AB Amsterdam, The Netherlands, August 1993.
An Approach to Schema Integration Based on Transformations.. - Thieme, Siebes (1994) (5 citations) Self-citation (Thieme Siebes) (Correct)
.... connected subgraph of graph(C) two attribute names are in the same set if their nodes are connected two attribute names are in different sets if their nodes are not connected, and joins(D1,D2) i.e. the set of common superclasses of D1 and D2) and (i.e. the subclass relation) are as defined in [25, 24]. 2 Note that the algorithm interacts with the designer. It should be mentioned again that the algorithm is a heuristic and should therefore be used in close interaction with the designer. The heuristic can be improved by combining the different thresholds and refining the different actions. This ....
C. Thieme and A. Siebes. Schema refinement and schema integration in object-oriented databases. Report CS-R9354, CWI, Amsterdam, The Netherlands, 1993.
An Approach to Schema Integration Based on Transformations.. - Thieme, Siebes (1994) (5 citations) Self-citation (Thieme Siebes) (Correct)
....terminological knowledge base containing information on negative and positive associations between terms and information on specialisation of terms is used to compare entity types. This report presents a new approach to schema integration, based on schema transformations and the approach taken in [23, 24], where classes are compared by structure and by behaviour. The approach consist of two steps. First, component schemas are restructured using schema transformations, and syntactical properties of methods are used to guide the restructuring process. Subsequently, the component schemas are merged ....
.... connected subgraph of graph(C) two attribute names are in the same set if their nodes are connected two attribute names are in different sets if their nodes are not connected, and joins(D1,D2) i.e. the set of common superclasses of D1 and D2) and (i.e. the subclass relation) are as defined in [25, 24]. 2 Note that the algorithm interacts with the designer. It should be mentioned again that the algorithm is a heuristic and should therefore be used in close interaction with the designer. The heuristic can be improved by combining the different thresholds and refining the different actions. This ....
C. Thieme and A. Siebes. Schema refinement and schema integration in object-oriented databases. In Proc. Computing Science in The Netherlands, pages 343--354. Stichting Mathematisch Centrum, 1993.
Type Equivalence, Subtyping, and Type Transformations in.. - Thieme, Siebes Self-citation (Thieme Siebes) (Correct)
.... integration has been identified as one of the major challenges in responding to enterprises information requirements [9] In this report, we will prove a number of completeness results that are useful for semantic database integration, where databases are integrated using structure and behaviour [10, 11]. As a basis for the completeness results, we need a formalisation of both database schemas and database instances. A database schema in an object oriented database language (e.g. O 2 [8] or TM [3] is a class hierarchy: a set of classes related by a subclass relation. A class has a set of ....
C. Thieme and A. Siebes. Schema refinement and schema integration in object-oriented databases. Report CS-R9354, CWI, Amsterdam, The Netherlands, 1993 (available by anonymous ftp from ftp.cwi.nl).
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