Partial and Complete Tuples and Sets in Deductive Databases
نویسنده
چکیده
In a nested relational or complex object database, nested tuples and sets are used to represent real world objects. For various reasons, such tuples and sets can be partial or complete. In this paper, we discuss how to support them in deductive databases. In particular, we present a deductive database language RLOG II that supports partial and complete tuples and sets based on Relationlog. This work provides a rm logical foundation for nested relational and complex object databases that have both partial and complete tuples and sets.
منابع مشابه
6 th International Workshop on Deductive Databases and Logic Programming
We discuss the semantics of complex object databases with both partial and complete tuples and sets. We redeene the notion of database to reeect the existence of partial and complete tuples and sets and study how to integrate partial information about tuples and sets spread in the database and check consistency in the meantime. We also present a deductive language RLOG II for complex objects wi...
متن کاملDeductive Databases | Where to Now?
Deductive databases result from the integration of database and logic programming techniques. It combines the beneets of these two approaches, such as representational and operational uniformity, recursion, declarative querying, eecient secondary storage access, etc. However, signiicant problems remain inherent in this synthesis. There are four broad areas where problems are apparent. The rst p...
متن کاملROL : A DEDUCTIVE OBJECT BASE LANGUAGEyMengchi
| This paper presents a novel deductive object-oriented database language, called ROL (Rule-based Object Language), which is being developed at the University of Regina. ROL eeectively integrates important features of object-oriented databases and deductive databases into a uniform framework. It supports object identity, complex objects, classes, class hierarchy, multiple inheritance with overr...
متن کاملManufactured in The Netherlands . An Overview of Rule - based Object
This paper presents an overview of a novel strongly typed deductive object database language, called Rule-based Object Language, which is being developed at the University of Regina. Rule-based Object Language is a uniform language for deening, querying, and manipulating a database, which integrates important features of deductive databases and object databases. It supports object identity, com...
متن کاملThe Rol Deductive Object Base Language (extended Abstract)
This paper presents a novel deductive object base language, called ROL (Rule-based Object Language), which has been implemented at the University of Regina and is available via anonymous ftp. It eeectively integrates important features of object-oriented databases and deductive databases into a uniform framework. It supports object-oriented features such as object identity , complex objects, cl...
متن کامل