An automated conversion of temporal databases into XML with fuzziness option

Download

index.pdf

Date

2010

Author

Işıkman, Ömer Özgün

Metadata

Show full item record

Item Usage Stats

234
views

83
downloads

The importance of incorporating time in databases has been well realized by the community and time varying databases have been extensively studied by researchers. The main idea is to model up-to-date changes to data since it became available. Time information is mostly overlaid on the traditional databases, and extensional time dimension helps in inquiring or past data; this all becomes possible only once the idea is realized and favored by commercial database management systems. Unfortunately, one disadvantage of the temporal database management system is that it has not been commercialized. Firstly XML ,eXtensible Markup Language, is a defacto standard for data interchange and hence integrating XML as the data model is decided. The motivation for the work described in this thesis is two-fold; transferring databases into XML with changing crisp values into fuzzy variables describing fuzzy sets and second bitemporal databases form one interesting type of temporal databases. Thus, purpose is to suggest a complete automated system that converts any bitemporal database to its fuzzy XML schema definition. However, the implemented temporal database operators are database content independent. Fuzzy elements are capable of having different membership functions and varying number of linguistic variables. A scheme for determining membership function parameters is proposed. Finally, fuzzy queries have also been implemented as part of the system.

Subject Keywords

Computer software.

URI

http://etd.lib.metu.edu.tr/upload/12612398/index.pdf
https://hdl.handle.net/11511/19884

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Natural language interface on a video data model Erözel, Güzen; Çiçekli, Fehime Nihan; Department of Computer Engineering (2005) The video databases and retrieval of data from these databases have become popular in various business areas of work with the improvements in technology. As a kind of video database, video archive systems need user-friendly interfaces to retrieve video frames. In this thesis, an NLP based user interface to a video database system is developed using a content-based spatio-temporal video data model. The data model is focused on the semantic content which includes objects, activities, and spatial properties of...
An information system re-structuring study for the financial inspection board Yıldırım, Meltem; Bilgen, Semih; Department of Information Systems (2004) With the scope of this study, certain tasks of the finance inspectors have been restructured by means of information technology in an effective way. The new structure has been integrated to the Internet technology and thus can eliminate the problems of time and place. The Documentation and Personnel Departments of FIB have been chosen for piloting and performance assesment has been performed after the restructuring with new technology. The result of the assesment suggest that, when compared to the old syste...
Fuzzy querying im XML databases Üstünkaya, Ekin; Yazıcı, Adnan; Department of Computer Engineering (2004) Real-world information containing subjective opinions and judgments has emerged the need to represent complex and imprecise data in databases. Additionally, the challenge of transferring information between databases whose data storage methods are not compatible has been an important research topic. Extensible Markup Language (XML) has the potential to meet these challenges since it has the ability to represent complex and imprecise data. In this thesis, an XML based fuzzy data representation and querying s...
An intelligent fuzzy object-oriented database framework for video database applications Özgür, Nezihe Burcu; Yazıcı, Adnan; Department of Computer Engineering (2007) Video database applications call for flexible and powerful modeling and querying facilities, which require an integration or interaction between database and knowledge base technologies. It is also necessary for many real life video database applications to incorporate uncertainty, which naturally occurs due to the complex and subjective semantic content of video data. In this thesis study, firstly, a fuzzy conceptual data model is introduced to represent the semantic content of video data. UML (Unified Mod...
A fuzzy petri net model for intelligent databases Bostan, Burçin; Yazıcı, Adnan; Department of Computer Engineering (2005) Knowledge intensive applications require an intelligent environment, which can perform deductions in response to user queries or events that occur inside or outside of the applications. For that, we propose a Fuzzy Petri Net (FPN) model to represent the knowledge and the behavior in an intelligent object-oriented database environment, which integrates fuzzy, active and deductive rules with database objects. By gaining intelligent behaviour, the system maintains objects to perceive dynamic occurences and use...

Citation Formats

Ö. Ö. Işıkman, “An automated conversion of temporal databases into XML with fuzziness option,” M.S. - Master of Science, Middle East Technical University, 2010.