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Design and Optimization of Database Based on Train Driving Simulation Training System

Author: LiaoBin
Tutor: GongZhuoRong
School: Beijing Jiaotong University
Course: Safety Technology and Engineering
Keywords: Driving simulation Relational database Normalization Theory Index selection model
CLC: TP311.13
Type: Master's thesis
Year: 2008
Downloads: 116
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Abstract


With the increasing social demand for railway transport capacity , the the locomotive running speed continued to improve , new models and large-scale use . This led to an extreme shortage of locomotive drivers and maintenance personnel to the railway safe transport caused uncertainty . Effective multi-user train driving simulation training system theory and implementation of training and assessment of drivers and maintenance personnel , shortened practice time with the car , improving training efficiency . This is one of the most critical : train driving simulation training system must be capable of high-speed , stable handling training operations of the participants in the same time , to ensure the smooth progress of the training . This high database system performance requirements . This paper is completed by the authors participating in the project of the Ministry of Railways train driving simulation training system based on . Thesis research and explore database design and optimization methods for theoretical training , and evaluation of the project drivers and maintenance personnel system to SQL Server 2000 , for example , given a set based on the relational data model , database design and optimization methods . The method based on the structure of a relational data model does not involve specific database operation , and external operating environment with wider applicability . Thesis the following three aspects : ( 1 ) the existing database data model for comparative analysis to select the appropriate data model - relational data model to model , and elaborate on the basic structure of the relational data model . (2 ) affect the performance of the database for SQL Server 2000 database generally encountered in the design of the three basic questions : abnormal data , null values ??, query cost study , the corresponding theory and use methods to solve these problems . Secondly, the index overhead is given for the problem of how to establish the most appropriate index index selection model and the corresponding algorithm and compare the pros and cons of each algorithm . (3) specifically addressed , focusing on database design methodology based on simulated driving training system to optimize the design of the database table structure through normalization theory , the composite entity structure theory , the theory of the parent type / subtype . Based query , insert, delete three basic SQL commands to basic verification of the correctness of the database design .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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