Download Rainbow: XML and Relational Database Design

Rainbow: XML and Relational Database
Design, Implementation, Test, and Evaluation
Project Members:
Tien Vu, Mirek Cymer, John Lee
Advisor:
Prof. Elke A. Rundensteiner
PH. D Student:
Xin Zhang
Sponsor:
GE Laboratories
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XML and Relational Database: What and Why?
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Benefits:
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Efficient query and analysis
tools.
Matured Data Warehousing
support.
Easy Integration with
existing business database.
Applications:
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E-commerce
Web-based industries
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XML and Relational Database
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Problem
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Many Application usually change its data very frequently.
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Current Solution
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e.g., flight reservation, online billing, inventory.
Reloading the complete XML document when changed which is
very expensive.
Rainbow Solution
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Incrementally propagate XML Document Updates to Stored XML
Data.
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Goal: XML Repository Implemented using RDBMS
Approach: Flexible Mapping
Features:
• DTD Metadata Management in RDB
• Automatic Schema Creation
• Incremental Update Propagation
• XML Query Optimization
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Goals of our MPQ
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Learn about the database technology
Translate abstract research ideas into actual
software system design
Implement large-scale Rainbow software system
Practice good software engineering: UML, reengineering and reuse
Design an experimental test plan and test bed
Conduct extensive performance study and analysis
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Rainbow System Architecture Overview
XML
Query
XML
Query
Workload
User
XML
Legend
XML
Model
XML Query Engine
Internal
Process
Restructuring
DBA
DTDM
Manager
Sub
system
DTDM Repository
Loader
Clock
Relational
Model
Dumper
DTD
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Schema
Creator
XML
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Java Object-Oriented Design
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Reuse and Re-engineering
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Difficulties and advantages of using existing code
Time span of design vs. implementation
Design Tools used in Re-engineering
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Unified Modeling Language (UML)
Object Domain – Class Diagrams, Activity Diagrams,
Sequence Diagrams
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Complete Class Diagram
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Rainbow Implementation
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Development Tools
 Java: Visual Café2,
Javadocs
 Oracle 8i, XML 4J,
JDBC1.2, SQL Queries
Code Facts
 22,991 lines of system code
 7,253 lines of Rainbow
code
 15,738 lines of code reused
 100 total system classes
 17 Rainbow system classes
 83 classes reused
Re-engineering success
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Rainbow Evaluation & Test
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Experiment Setup
 Oracle 8i
 Win NT
 Randomly
generated data
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Rainbow Analysis
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Rainbow Analysis Cont..
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Rainbow Conclusions
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Accomplishments
 Built complex Object Oriented design
 Fully functional
 Feasibility improvements to Rainbow concept
 Automated test bed
 Performance evaluations
Knowledge gained
 OO, Java, JDBC
 SQL, DBMS
 Software reuse & re-engineering
 Teamwork & S/W Engineering Project
Future works:
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Rainbow: XML and Relational Database
Design, Implementation, Test, and Evaluation
Project Members:
Tien Vu, Mirek Cymer, John Lee
Advisor:
Elke A. Rundensteiner
PH. D Student:
Xin Zhang
Visit Rainbow at http://davis.wpi.edu/dsrg/TJM/
04-19-2001
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