1. Effective Testing Strategy for
Data Migrations
Sravan Kumar Konidena, Architect
Ganesh Kumar Singh, Senior Consultant
Smita Sinha, Senior Consultant
ADP Pvt. Ltd

2. Abstract
As technology is rapidly changing, enterprise corporations need to bring their clients to modern platforms from legacy systems. Also, in case of company mergers, the clients have to be brought to a single product, post the merger. This makes data migration an important activity to ensure that transition is seamless. This paper is about testing strategy for data migrations covering areas like pre and post data comparison, comprehensive test coverage, automation techniques, etc.

3. Digital Convergence  Data Convergence3

4. Reasons for Data Migrations
Moving to Next-Gen platforms
Company Mergers
Decommissioning legacy systems
Adding new line of business
Relocation of infrastructure
Switching Vendors
Consolidation of system

5. Data Migration: Key Risks
Data loss
Data corruption
Application performance issues
Prolonged downtime
Budget overruns
Customer or Brand Impact

6. Data Migration Test Strategy
Establish a migration team
Evaluate business risks and scope of migration
Analyze data transformation from source to destination
Design a roll back strategy in case of failures
Automate the testing process to ensure coverage and speed
Identify defects by performing dry runs on test environments
Perform comprehensive post migration testing
Ensure a seamless transition of the end-user experience

7. Pre-Migration Testing
Setup test environment for migration
Configure destination system requirements
Perform dry runs on test environments
Fix defects and certify migration scripts
Run reports and save as baseline 7

8. Post-Migration Testing
Verify the migrated data on the UI
Run the reports post-migration
Compare pre and post migration reports
Verify the results and certify the migrations
Rollback, in case of any failures 8

9. Automated Migrations Testing
Prepare Test Scripts to capture data
Design logic for data transformation
Execute scripts to compare the data
Run automated UI tests post migration
Generate reports to analyze failures
Build a platform to manage the entire process
Automated Migrations Testing 9

10. Comprehensive coverage
Automated Migrations Testing - Benefits
Comprehensive coverage
Verify the complete set of data instead of sampling a subset.
High speed
Accelerate the process by performing more migrations per batch.
Mitigate risks
Avoid sporadic issues and ensure minimum downtime.
Reduce costs
Increase reusability with reduced efforts and greater accuracy.

11. Question & Answers