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XMI2SQL
Capstone Presentation
Principal Investigator: Eric Hartford
Committee Chair: Sam Chung, Ph.D.
Committee Member: Isabelle Bichindaritz, Ph.D.
Overview
Background
 Problem
 Solution
 Methodology
 Progress

Background

What do all these acronyms mean?
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XML
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Extensible Markup Language
Standardized hierarchical data format
Maintained by World Wide Web Consortium (W3C)
UML
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

Unified Modeling Language
Standardized language for modeling object-oriented
software
Maintained by Object Management Group (OMG)
Background

CASE
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Computer Aided Software Engineering

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Software tools
Implement modeling languages like UML
Intended to make development less risky and more
effective.
XMI
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XML Metadata Interchange
Used to encode metadata, including UML diagrams.
Standard export format for many CASE tools.
Maintained by OMG
Background
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RDBMS

Relational Database Management System
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database system
implements relational data model.
Example:
MS SQL Server
Oracle
MySQL
PostgreSQL

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SQL
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Structured Query Language
Standard language for interacting with RDBMS.
Maintained by
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American National Standards Institute (ANSI)
International Organization for Standardization (ISO).
Problem

Data Modeling
Created using CASE tools
 Implementation-neutral
 Graphical format
 Proprietary format

Problem

Once modeling is complete, how is the
design transferred into implementation?
Manual transcription
 Custom script
 Proprietary automated database insertion
 What is wrong with these methods?

Redesigning the wheel
 Tightly coupled with software vendors
 User has less freedom

Solution

XMI2SQL
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Input

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Output

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XMI encoding of UML model of the data to be
implemented
List of SQL commands used to implement the
model encoded by the XMI input file
Web Service Interface for cross platform
compatibility
Methodology
Analyze similar solutions
 Determine / design data model encoding
protocol
 Determine or design conversion
algorithm
 Implement web service interface
 Test and deploy

Analyze Similar Solutions

UML2SQL
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Inserts data directly into database from model.
Uses similar parsing / conversion algorithm to mine
Defines its own data modeling standard
I opted not to use it

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I wanted to use Agile Data’s UML Profile (next slide)
I preferred to design my own algorithm
Author of UML2SQL expressed doubt as to viability of the
idea.
Data model encoding protocol

Two real standards at this point
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Rational’s UML for Data Modeling Profile
Agile Data’s UML Profile for Data Modeling
I chose Agile Data’s profile.

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Rational was recently bought out – I’m nervous
about trusting IBM to upkeep Rational’s work.
I liked Agile Data’s casual style
Rational’s approach to Keys is not slick. It seems to
be proprietary to Rose rather than oriented to OMG
UML.