Towards the initial conceptual database model through the UML metamodel transformations

2011 ◽  
Author(s):  
D. Brdjanin ◽  
S. Maric
Keyword(s):  
Database Model ◽  
Uml Metamodel

Incomplete information in a relational database

1980 ◽  
Vol 3 (3) ◽  
pp. 363-377
Author(s):  
John Grant
Keyword(s):  
Incomplete Information ◽  
Relational Database ◽  
Functional Dependency ◽  
Relational Algebra ◽  
Database Model ◽  
Character String

In this paper we investigate the inclusion of incomplete information in the relational database model. This is done by allowing nonatomic entries, i.e. sets, as elements in the database. A nonatomic entry is interpreted as a set of possible elements, one of which is the correct one. We deal primarily with numerical entries where an allowed set is an interval, and character string entries. We discuss the various operations of the relational algebra as well as the notion of functional dependency for the database model.

Lenses, fibrations and universal translations

2011 ◽  
Vol 22 (1) ◽  
pp. 25-42 ◽  
Author(s):  
MICHAEL JOHNSON ◽  
ROBERT ROSEBRUGH ◽  
R. J. WOOD
Keyword(s):  
Computer Science ◽  
Ordered Sets ◽  
Database Model ◽  
View Update ◽  
Universal Solution ◽  
Categorical Database

This paper extends the ‘lens’ concept for view updating in Computer Science beyond the categories of sets and ordered sets. It is first shown that a constant complement view updating strategy also corresponds to a lens for a categorical database model. A variation on the lens concept called a c-lens is introduced, and shown to correspond to the categorical notion of Grothendieck opfibration. This variant guarantees a universal solution to the view update problem for functorial update processes.

scholarly journals An approach to automated conceptual database design based on the IML activity diagram

2012 ◽  
Vol 9 (1) ◽  
pp. 249-283 ◽  
Author(s):  
Drazen Brdjanin ◽  
Slavko Maric
Keyword(s):  
Business Process ◽  
Automatic Generation ◽  
Activity Diagram ◽  
Automated Generation ◽  
Database Model ◽  
Starting Point ◽  
Uml Class Diagram ◽  
Business Objects ◽  
Business Process Modeling Notation ◽  
Uml Activity Diagram

This paper presents an approach to the automated design of the initial conceptual database model. The UML activity diagram, as a frequently used business process modeling notation, is used as the starting point for the automated generation of the UML class diagram representing the conceptual database model. Formal rules for automated generation cover the automatic extraction of business objects and business process participants, as well as the automatic generation of corresponding classes and their associations. Based on these rules we have implemented an automatic generator and evaluated it on a real business model.

scholarly journals A Graph Database Model for Knowledge Extracted from Place Descriptions

2018 ◽  
Vol 7 (6) ◽  
pp. 221 ◽  
Author(s):  
Hao Chen ◽  
Maria Vasardani ◽  
Stephan Winter ◽  
Martin Tomko
Keyword(s):  
Graph Database ◽  
Database Model ◽  
Place Descriptions
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