Conceptual Modeling for Moving Objects Database Applications

2008 ◽  
Author(s):  
Peiquan Jin ◽  
Shouhong Wan ◽  
Lihua Yue
Keyword(s):  
Moving Objects ◽  
Conceptual Modeling ◽  
Database Applications ◽  
Moving Objects Database

Conventional and Non-Conventional Data Modeling

2013 ◽  
pp. 141-158
Author(s):  
Maria Salete Marcon Gomes Vaz ◽  
Lucélia de Souza
Keyword(s):  
Real World ◽  
Conceptual Modeling ◽  
Data Modeling ◽  
Relational Model ◽  
Data Types ◽  
Database Applications ◽  
Modeling Process ◽  
Object Relational ◽  
Entity Relationship ◽  
Conversion Rules

The modeling of database applications involves deciding on how to represent the project in real-world objects. The data modeling process corresponds to a set of conceptual tools to describe data, its relationships, its semantics, and constraints of consistency. This process involves the steps related to the identification of requisites, conceptual modeling of data, conventional modeling, and non-conventional modeling of objects, and its relationships. In the conceptual modeling, where there is no need to specify the methods and data flow, objects and their relationships are defined. In conventional modeling, in the mapping of the conceptual model (Entity/Relationship) to the logical model (Relational) conversion rules are applied. However, there are non-conventional resources with the ability to create and use data types based on a grouping of other data types. The user-defined objects can be defined and used like any other data type. This chapter describes the process of mapping the relational model for the object-relational modeling, using a practical application in agricultural context, but it should be noted that the methodology is applicable to any area of knowledge.

Research of Modeling Moving Objects Database over Space-Time Grid

2011 ◽  
Vol 268-270 ◽  
pp. 1301-1306
Author(s):  
Chao Liu ◽  
Zhong Cheng Yu
Keyword(s):  
Moving Objects ◽  
Space Time ◽  
Moving Object ◽  
Dynamic Information ◽  
Grid Model ◽  
Time Space ◽  
Database Technique ◽  
Moving Objects Database ◽  
Time Grid

It is important to manage the dynamic information of moving objects in database technique, it is crucial that how to manage and query the dynamic information of moving objects effectively. In this paper, a system to manage moving object is discussed, which changes time-space into ST-GRlD (space-time grid) model and changes the moving tract of the moving object into poly line in the ST-GRlD .The Ripple Insert algorithm to produce poly line tract and the solution of moving object abruptly changing destination are given.

Uncertainty Management in Moving Objects Database

2014 ◽  
pp. 133-148 ◽  
Author(s):  
Xiaofeng Meng ◽  
Zhiming Ding ◽  
Jiajie Xu
Keyword(s):  
Moving Objects ◽  
Uncertainty Management ◽  
Moving Objects Database
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