|
|
| Identifier |
000373014 |
| Title |
A Temporal Algebra supporting Indeterminacy |
| Alternative Title |
Μία άλγεβρα χρονικού λογισμού με υποστήριξη ασάφειας |
|
Author
|
Μακρυδάκης, Ιωάννης Γεώργιος
|
|
Thesis advisor
|
Πλεξουσάκης, Δημήτρης
|
| Abstract |
The representation and processing of time-varying information is a basic requirement in the information systems and is a longstanding area of research. In the area of databases recording the dynamics of the world represented; requires recording the time at which a fact is valid. Essential is the ability to process time for both to maintain the integrity of temporal information and for extracting time-related data. Several models of representation and processing time have been proposed mainly based on calculus and triggered the bitemporal conceptual model. However these proposals primarily focus on the conceptual level or the level of relational operators, paying less attention on the time model closer to the physical layer and theoretical foundation through algebra of processing time. Even less attention is given to the representation and processing of time that comes to question when creating or recording the indeterminate time of validity over a fact.
The purpose of this thesis is the introduction of a general temporal model for representing time that supports temporal indeterminacy. Initially demanding is to clarify the semantics of the operators in the correlation of time uncertainty with determinate temporal information. The temporal algebra we suggest with the theoretical foundation of its operators; accompanied with computational efficiency, user friendliness, and the compact representation is fundamental for the documentation of systems that process time. The implementation of the model as independent modules makes possible the use of system deployment either internally in database management systems either at the application level.
|
| Language |
English |
| Subject |
Temporal Algebra |
|
Temporal Databases |
|
Χρονικές βάσεις δεδομένων |
|
Χρονική άλγεβρα |
| Issue date |
2012-03-16 |
| Collection
|
School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
|
|
|
Type of Work--Post-graduate theses
|
| Views |
461 |
A Temporal Algebra supporting Indeterminacy
