منابع مشابه
Semantic Queries in Distributed Relational Database Using Global Ontology Construction
Semantic web refers to the extension of the World Wide Web and it will provide a common framework which makes data available for reusing and sharing. Ontology is the backbone of Semantic web which is used to access relational database in Semantic web. This paper proposes a new approach which enables Semantic web application to access distributed relational databases. The method involves two mai...
متن کاملRelational Database Migration: A Perspective
This paper presents an investigation into approaches and techniques used for database conversion. Constructing object views on top of a Relational DataBase (RDB), simple database integration and database migration are among these approaches. We present a categorisation of selected works proposed in the literature and translation techniques used for the problem of database conversion, concentrat...
متن کاملA Family of Incomplete Relational Database Models
In this paper. we utilize intervals for unknown values in incomplete relational databases. We use tables to represent unknown relations. First, we define three partial tuple types in a table to specify incompleteness relationships among tuples of the same table. For tuples of different tables, we distinguish between the cases where incompleteness are introduced at the relation level, tuple leve...
متن کاملA relational database of transcription factors.
Recent advances in the understanding of eukaryotic gene regulation have produced an extensive body of transcriptionally-related sequence information in the biological literature, and have created a need for computing structures that organize and manage this information. The 'relational model' represents an approach that is finding increasing application in the design of biological databases. Th...
متن کاملDeductive Extension of a Relational Database System
Logic based knowledge processing systems such as PROLOG based expert systems have shown obvious drawbacks in performing conventional database tasks. Knowledge processing by deduction on a large set of given facts can be better performed by a deductive database system based on Horn logic and relational database theory. A concept is presented to extend an existing relational database system to ma...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geoscience Frontiers
سال: 2018
ISSN: 1674-9871
DOI: 10.1016/j.gsf.2017.12.004