1. Enterprise Architecture Methodology at KPMG
David vun Kannon
Manager, Financial Services Consulting
KPMG LLP
12/29/2018

2. Introduction
The Problem: “I spent $500 million on IT, and all I got was this lousy source code (ERP system, etc.)!”
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3. Topics of Discussion Overview of enterprise architecture
Our model-driven approach
The relevance of XML
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4. Overview of Enterprise Architecture
Skyscrapers are not 10,000 doghouses stacked on top of each other.
10K doghouses=10K siloed apps
No global planning or direction a function of the disconnect between IT and the business it supports.
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5. Enterprise Requirements
“You start coding, I’ll get the requirements.” NOT!
Cannot overemphasize the importance of design and requirements gathering
Exponentially less costly to fix mistakes at this stage.
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6. KPMG’s Model-Driven Approach
Capture requirements
Organise requirements
Operationalise requirements
Shadow Implementation to maintain relevance
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7. Leveraging the Requirements
Documentation
Code generation
Administrivia
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8. The Relevance of XML UML is a visual language No consistent API
Models are documents, not programs
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9. XMI – UML in XML Part of OMG MOF initiative A mechanically derived DTD
Goal is supporting interchange
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10. SimpleBank A trivial model A non-trivial script Legacy up-translation
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11. What This Means Separation of modeling and code generation
Choose the right tool for the job
Legacy support via up-translation to XMI
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12. XMI – Not Just For Interchange
Code Generation
Separating Modeling and CG
The relevance of XSL
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13. Code Generation Traditional target of the object model’s class diagram
UI - HTML
Business Logic - Data structures, function stubs, directory and file structure in C++, Java, VB, etc.
Persistent Storage – SQL DDL
Targeted in isolation
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14. Separating Modeling from CG
Tools do one thing well
Don’t expect good code generation from a great modeler
More choices from unbundled tools
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15. The Relevance of XSLT Tool appropriate to the task
Can quickly add new targets
Can tune the O-R mapping
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16. UML2SQL.XSL Generates DDL for MS SQL Server March draft XSLT and XT
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17. Next Steps Tremendous opportunities in code generation
New targets – LDAP, DSML, UIML
New Sources – sequence diagrams, statecharts,
Cross tier coordination
The XML messaging vocabulary
Round trip engineering
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18. Next Steps From static to dynamic system descriptions
Decorating the model with active metadata
Application instrumentation
Design For Change and the invalidated assumption
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