Handling imperfect spatiotemporal information from the conceptual modeling to database structures (original) (raw)

Fuzzy and uncertain spatio-temporal database models: a constraint-based approach

2002

In this paper a constraint-based generalised object-oriented database model is adapted to manage spatiotemporal information. This adaptation is based on the definition of a new data type, which is suited to handle both temporal and spatial information. Generalised constraints are used to describe spatio-temporal data, to enforce integrity rules on databases, to specify the formal semantics of a database scheme and to impose selection criteria for information retrieval.

Conceptual Modeling Through Fuzzy Logic for Spatial Database

Fuzzy logic shows a degree of vagueness or uncertainty that is expressed with crisp spatial objects. It supports spatial database objects which can precisely determine shape and boundaries. The uses of fuzzy logic with spatial database for conceptual modeling handles uncertain data types in fuzzy object-oriented database. Fuzzy approaches have been extensively applied for modeling different databases to explicitly represent and manipulate the imprecise and uncertain data precisely. In this paper, a new conceptual modeling approach has been developed and studied on the case of traffic modeling and route identification problem. Keywords Fuzzy object-oriented database (FOODB) Á IF 2 O model Á EER model Á Aggregation Á Specialization Á Inheritance Á UFO model

Survey on Spatio-Temporal Database and Data Models with relevant Features

2013

Spatio-temporal data is the abstract of the spatiotemporal characteristics and process of the real world .Spatiotemporal database modeling on the earlier stages attempted to capture the state of real world objects or the physical event upon them ,on the time line .The spatio-temporal data models integrates time and space so it can truly describe the reality . In this paper ,we have review the different types of spatio-temporal datamodels that have been proposed in the literature as welll as new theories and concepts that have emerged .