1.
The perfect Way to better Software
Automated Software Modernization
Case Study: RDW

2.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved. 2Automated Software Modernization

3.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Netherlands Vehicle Authority
3Automated Software Modernization
Founded in 1949 and privatised in
1996, RDW is the central vehicle
authority of The Netherlands.
As a service organisation, RDW is
responsible for the central
registration and administration of all
vehicles, approvals and driving
licences.
Beyond that, its mission comprises
technical standardisation,
engineering expertises, annual
vehicle inspections as well as the
monitoring of safety and
environmental aspects.

4.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
The Legacy and the Vision,
The Legacy
 Unisys OS2200 DPS, TIP, UCOB, RDMS, COBOL & Assembler
 11.000+ Source Objects
 14.000,000 Lines of Source Code
 1.500 Screens
The Vision
 Microsoft Windows, MSSQL, .NET, COBOL & C#
 Automated Migration, No Footprint
4Automated Software Modernization

5.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
The Project Steps
1. Understanding the application
2. Definition of the Architecture, Modernization rules and
Roadmap
3. Proof of Concept
4. Preparing the Factory
5. In-place Migration first – Platform Independency
6. Meta Level Testing
7. Fluent Migration
8. Final Data Migration and Go Live
5Automated Software Modernization

6.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
1. Understanding the Application
AMELIO Modernization Platform
 Stocktaking
 Identifying Modernization Points of Interest
 Identifying Dead
Code
 Seperating Business
Logic from Technical
Infrastructure
6Automated Software Modernization

7.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
What did we learn?
Problem 1: Technical Issues
 9-bit vs 8-bit
 Interface Lengths Mismatch
Problem 2: Big Bang or ...
Problem 3: 24/7 (Max 15 minutes downtime)
Problem 4: Are we sure about our decisions
Problem 5: How do we test all the necessary changes
7Automated Software Modernization

8.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
2. New Environment and Roadmap
 Changing the architecture, for old and new platform
 In place migration first
 Achieving Platform Indepency
 100% Automated Modernization
 Meta level testing
 Migrate with a push on the button and be able to go back
8Automated Software Modernization

9.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
3. Proof of Concept
 Monolithic Architecture  3 Tier
 All Technical Issues Solved
 Cooperation between modernized and not yet modernized
components
 All Platform Specific Aspects in separate Objects
 Generate for old and new from the same Source
9Automated Software Modernization

10.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
4. Preparing the Factory
10Automated Software Modernization

11.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Starting Point
11Automated Software Modernization
RDMS RDMS
Migrated
Monolithic

12.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
5. In-place Migration
 Modernizing Monolythic Architecture into 3
Tier Architecure
 Isolating Platform Independance in seperate
Source Objects (making use of Software
Generator)
 Back the existing Production Environment
 Cooperation between old and new Version to
enable a flexible Project Timeline
12Automated Software Modernization
RDMS RDMS
Data
Server
Data
Server
Migrated
Modernized

13.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Migrated
6. Meta Level Test
Meta Level Testing
 Automated Changes are
predictable, right is always
right, wrong is always wrong
 Testing of all Change Rules
 … not all Changed
Programs
 Performed with a selected
and complete Test-Set
 Tests incl. Runtime-Test
 Non-blocking
 Parallel with continuing
Maintenance and
Development
13Automated Software Modernization
MS/SQL MS/SQL
Data
Server
Data
Server
Switch
RDMS RDMS
Data
Server
Data
Server
Migrated
Modernized

14.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Migrated
7. Bridging the worlds
Fluent Migration
 Generating the new
Platform from the same
sources as for the old
Platform
 Bringing Cluster to the
new Platform but leaving
the Data on the old
Platform
14Automated Software Modernization
RDMS RDMS
Data
Server
Data
Server
MS/SQL MS/SQL
Data
Server
Data
Server
Switch
Modernized

15.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Migrated
7. Bridging the worlds
Fluent Migration
 Leaving the Data on the
old Platform until the last
Cluster
 Having the Data on Test
Environment tested with
the same Migrated
Business Logic
15Automated Software Modernization
RDMS RDMS
Data
Server
Data
Server
Migrated
MS/SQL MS/SQL
Data
Server
Data
Server
Switch

16.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Migrated
8. Data Migration and Go Live
16Automated Software Modernization
RDMS RDMS
Data
Server
Data
Server
Migrated
MS/SQL MS/SQL
Data
Server
Data
Server
Switch

17.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Key Figures
End Result
 11 Million Lines of Cobol Source
 1.3 Million Source Code Changes
 Level of Automation: 98,66% Programs 100% Automatically
Modernized, 1,34% Needed additional Manual Change
 <50 Minor Errors after Go Live (and >50 old Errors found in
Productive Software during the Migration Project)
Total Project Cost: USD 60 Million
17Automated Software Modernization

18.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Profits
 Limited Test Effort through Automation
 Flexibility during the Migration
 Reducing Cost during the Project
 No Freeze – No Hurry
 Use of New Technology without rewriting the Existing
 And …
18Automated Software Modernization

19.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved. 19Automated Software Modernization

20.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
Take home message
20Automated Software Modernization

21.
Copyright © 2017 Delta Software Technology GmbH.
All Rights reserved.
www.delta-software.com
21Automated Software Modernization
https://de.slideshare.net/Delta-Software https://twitter.com/DeltaSoftwareT
Delta Software Technology GmbH
Eichenweg 16, 57392 Schmallenberg, Germany
www.delta-software.com