Data migration and reconciliation

Map CSV columns, resolve invalid rows, approve a migration and reconcile the result.

Open the demo

Opens migration.taiphamsolutions.com in a new tab. No account, no signup, and nothing you do in it leaves your browser.

What it does

Map CSV columns, resolve invalid rows, approve a migration and reconcile the result.

Import sample data, fix validation errors, switch to reviewer to approve, then commit as administrator.

Import sample data, fix validation errors, switch to reviewer to approve, then commit as administrator.

Features

Seeded examples use English names. Switch between English and Vietnamese.

Atomic commits and rollback

Import sample data, fix validation errors, switch to reviewer to approve, then commit as administrator.

Simulated roles

Switch roles to explore workflow permissions. This is not secure authentication.

The flow it closes, end to end

Every step below happens inside the demo. There is no point in it where the work leaves the browser and comes back.

  1. Try the workflow

    Import sample data, fix validation errors, switch to reviewer to approve, then commit as administrator.

  2. Inspect the result

    Reload the page to inspect the records saved in your browser.

What is real, and what is not

There is no server behind any of this, which decides both columns. The left one is what that constraint made worth building properly. The right one is what it rules out.

Actually handled

  • Atomic commits and rollback
  • IndexedDB persistence

Deliberately not real

  • No backend, real accounts or cross-device synchronization.
  • Payments, tax and transfers are simulations. Do not use sensitive documents; local data is unencrypted and may be cleared by the browser.

How it is built

The write-up sells harder than the application does, so it is on the page rather than in a repository nobody can open.

Frontend
Preact + TypeScript
Storage
IndexedDB
Hosting
Cloudflare Workers

The services this is evidence for

A demo exists to prove something on the offer list rather than to be impressive on its own. These are the ones this one argues for.

The other demos

Each one is a different kind of problem, and all of them are in the Demos menu at the top of the page.

Want the version of this with your rules in it?

This one was built to a constraint nobody would choose. Yours would have a server, real accounts, and the parts of the domain that are actually hard. Tell us what the software has to do and we will tell you what it takes.

Bring the messy version of the problem. That is the conversation we enjoy most.

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