caa a22 4500 475799437 CHVBK 20180406123733.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1023/A:1008774006482 doi (NATIONALLICENCE)springer-10.1023/A:1008774006482 Liu Mengchi Department of Computer Science, University of Regina, S4S 0A2, Regina, Saskatchewan, Canada aut Design and Implementation of the ROL Deductive Object-Oriented Database System [Elektronische Daten] [Mengchi Liu] ROL is a deductive object-oriented database system that has been implemented at the University of Regina. It provides a uniform rule-based declarative language for defining, manipulating and querying databases, which integrates important features of both deductive databases and object-oriented databases. It supports object identity, complex objects, classes, class hierarchies, multiple inheritance with overriding and blocking, and schema definition. It also supports structured values such as functor objects and sets, treating them as first class citizens, and providing powerful mechanisms for representing both partial and complete information about sets. This paper describes its design and implementation. An important novel feature of the implementation is that it combines top-down and bottom-up evaluation strategies and automatically selects a strategy based on the nature of the query and data in the database. Kluwer Academic Publishers, 2000 deductive database systems nationallicence object-oriented database systems nationallicence query processing nationallicence rapid prototyping nationallicence rule-based systems nationallicence Journal of Intelligent Information Systems Kluwer Academic Publishers 15/2(2000-09-01), 121-146 0925-9902 15:2<121 2000 15 10844 https://doi.org/10.1023/A:1008774006482 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008774006482 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Liu Mengchi Department of Computer Science, University of Regina, S4S 0A2, Regina, Saskatchewan, Canada aut NATIONALLICENCE 773 0- Journal of Intelligent Information Systems Kluwer Academic Publishers 15/2(2000-09-01), 121-146 0925-9902 15:2<121 2000 15 10844 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer