Jeffrey D. Ullman. Principles of database systems. Second edition. Computer software engineering series. Computer Science Press, Rockville, Md., 1982, vii + 484 pp. - David Maier. The theory of relational databases. Computer Science Press, Rockville, Md., 1983, xv + 637 pp. - Ashok K. Chandra and David Harel. Computable queries for relational data bases. Journal of computer and system sciences, vol. 21 (1980), pp. 156–178.

1986 ◽  
Vol 51 (4) ◽  
pp. 1079-1084
Author(s):  
J. A. Makowsky
Keyword(s):  
Software Engineering ◽  
Computer Science ◽  
Relational Databases ◽  
Computer Software ◽  
Database Systems ◽  
Relational Data ◽  
Data Bases ◽  
Series Computer ◽  
Relational Data Bases

Associating types with domains of relational data bases

1981 ◽  
Vol 16 (1) ◽  
pp. 144-146
Author(s):  
Michel Lacroix ◽  
Alain Pirotte
Keyword(s):  
Relational Data ◽  
Data Bases ◽  
Relational Data Bases

scholarly journals BUILDING ONTOLOGIES OVER RELATIONAL DATABASES

2018 ◽  
Vol 6 (11) ◽  
pp. 254-265
Author(s):  
Damitha D Karunaratna
Keyword(s):  
Relational Databases ◽  
World Wide ◽  
Query Languages ◽  
Public Access ◽  
Prototype System ◽  
Data Bases ◽  
Domain Specific ◽  
The World ◽  
Access Data ◽  
Relational Data Bases

Relational Databases are typically created to fulfil the information requirements of a community of users generally belongs to a single organization. Data stored in these databases were typically accessed by using Structured Query Languages or through customized interfaces.  With the popularity of the World Wide Web and the availability of large number of Relational Databases for public access there is a need for users to retrieve data from these databases by using a text-based queries, possibly by using the terms that they are familiar with. However, the inherent limitations of Structured Query Languages used to create and access data in relational Data Bases does not allow uses to access data by using text-based queries. Also, the terms used in queries should be limited to those used during the construction of the databases. This paper proposes an architecture to generated ontologies over relation databases and show how they could be enhanced semantically by using available domain-specific or top-level ontologies so that the data managed by the DBs can be accessed by using text-based queries. The feasibility of the proposed architecture was demonstrated by building a prototype system over a sample MySQL database.

The theory of joins in relational data bases

1977 ◽  
Author(s):  
A. V. Aho ◽  
A. Beeri ◽  
J. D. Ullman
Keyword(s):  
Relational Data ◽  
Data Bases ◽  
Relational Data Bases

Extremal problems in relational data bases

Cybernetics ◽  
1985 ◽  
Vol 20 (6) ◽  
pp. 809-816
Author(s):  
Ya. Demetrovich ◽  
D. Katona
Keyword(s):  
Extremal Problems ◽  
Relational Data ◽  
Data Bases ◽  
Relational Data Bases
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