dadecasdev

Enterprise data migrations

Moving catalogues, customers and relationships between platforms, with a dry run first.

PythonPostgreSQLSQLopenpyxlREST API

The problem

A migration only runs well once. Discovering halfway through that there were duplicates or badly resolved relationships makes undoing it on a production system far more expensive than checking beforehand.

The solution

Purpose-built tooling that simulates first: it walks the data, shows exactly which records would be affected, detects duplicates and conflicts, and only then runs the real migration. The intermediate step is usually a spreadsheet the person who knows the business can review.

What it includes

  • Migration of products, categories, customers and addresses
  • Sources from Excel, CSV, APIs or other databases
  • Duplicate and conflict detection before anything is written
  • Mappings to external platform identifiers
  • Post-migration checks to verify the outcome
  • SQL analysis and diagnostic queries on PostgreSQL

Outcome

Migrations executed with problems found and resolved during the dry run, rather than on data already written to production.

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