Data profiling & quality audit
We inspect the current data for gaps, duplicates, and inconsistencies, so problems are found before the move, not after.
App Modernization · Database & Data Migration · AI-First · Results-Driven
Database & Data MigrationOnto a Modern Database, With Nothing Lost
Short answer: Database and data migration moves your data onto a modern, supported database and reshapes it to fit, with reconciliation checks that prove nothing was lost or altered. It is chosen when a database is end-of-life, too slow, costly to license, or the schema no longer matches how the business works. Zen in Tech plans the mapping, migrates in stages, and validates old against new before cutover. Scope is typical and confirmed on a free call.
The hard part of a migration is proving nothing changed
Database and data migration is the work of moving data from one database to another, often across different engines or schemas, and reshaping it so it fits the new model correctly, without losing records or silently corrupting values along the way.
Moving rows is easy; guaranteeing they arrived complete and correct is the real job. We build the mapping carefully, migrate in stages, and reconcile row counts, sums, and samples so the new database provably matches the old one.
For 20+ years and 700+ projects our in-house Houston team has run migrations across SQL and NoSQL engines. The same people who profile your current data design the target schema, run the migration, and validate the result before anyone cuts over.
What we cover
What a database & data migration covers
Target schema & data modeling
We design a schema on the new database that fits how the business works now, not just a copy of the old structure.
Mapping & transformation (ETL)
We map every field to its new home and transform types and formats, so data lands correctly in the new model.
Engine migration (SQL & NoSQL)
We move between engines, such as SQL Server to PostgreSQL or onto a NoSQL store, choosing the right fit for your workload.
Reconciliation & validation
We check row counts, totals, and samples of old against new, so you have proof nothing was lost or altered.
Staged cutover & rollback
We migrate in stages with parallel runs and a rollback path, so the switch happens safely with minimal downtime.
Services
How a data migration works with us
From profiling the current data to a reconciled cutover, here is how a database and data migration runs at Zen in Tech.
1. Data audit & profiling
We profile the existing data for volume, quality, and quirks, and document the constraints the migration has to respect.
2. Target schema & migration plan
We design the new schema, choose the target engine, and plan the mapping, stages, and rollback points.
3. ETL & transformation build
We build the extract, transform, and load pipeline that maps and reshapes data into the new database correctly.
4. Trial migration & reconciliation
We run the migration on a copy, reconcile old against new, and fix mapping issues before touching production.
5. Staged cutover
We migrate for real in stages, run old and new in parallel where possible, and switch over with a rollback ready.
6. Post-migration validation & support
We verify integrity after cutover, monitor the new database, and support and tune it on a care plan.
Tools & platforms
The migration stack we run
The exact toolset depends on your goals — these are the platforms we use most, and we work with whatever your team already relies on.
Profiling & audit
Data profilingquality checksschema mapping
Source engines
Target databases
ETL & pipelines
Custom ETLAirflowFlywayLiquibase
Validation
Reconciliation scriptsrow / sum checkssampling
Cloud & delivery
Chosen per project — not a fixed menu. Have a preferred tool or platform? We’ll work with it.
Built to last
Secure, Accessible & Built to Last
We build on modern, well-supported frameworks with security and accessibility baked in — dependency hygiene, input validation, HTTPS and WCAG-minded UI — so your product is safe and usable from day one.
You own all the code and assets. Everything ships with documentation and a clean handover, so your team (or ours) can maintain and extend it without lock-in.
Who we work with
Industries We Build For
20+ years across sectors — in Houston and internationally.
Transparent pricing
Estimate your project in seconds
Pick what you’re building for an indicative range, then request an exact quote. No email wall.
Simple prices for typical tasks
- Audit & planfrom $3k
- Replatformfrom $18k
- Full rebuildfrom $30k
- Care planfrom $1k/mo
Proof
700+ projects, 20+ years
See the products and growth work we’ve shipped across industries — and request a case study relevant to yours.
How we work
Fixed scope. Sprints. Working software.
- 01
Scope & fixed estimate
A short discovery call turns your idea into a clear spec and a firm range — free.
- 02
Design & architecture
UX, data model and stack chosen for your scale, not ours.
- 03
Build in sprints
Working software every 1–2 weeks — you see progress, not promises.
- 04
Launch & scale
We ship, measure and keep improving with care plans.
FAQ
Database & data migration: frequently asked questions
How much does a database and data migration cost?
Cost depends on data volume, how different the source and target schemas are, and how much cleanup and transformation the data needs. We scope it after a data audit and confirm the exact number on a free call.
What is database and data migration?
It is moving data from one database to another, often across engines or schemas, and reshaping it to fit the new model, with reconciliation checks that prove nothing was lost or changed. It is about correctness and integrity, not just copying rows.
How long does a data migration take?
Timeline scales with data volume and how much transformation and cleanup is required. We run a trial migration first to surface issues, then a staged production cutover. A realistic timeline follows the data audit.
How do you make sure no data is lost or corrupted?
We reconcile the new database against the old one by comparing row counts, totals, and sampled records, and we run a trial migration on a copy first. Running old and new in parallel during cutover means we can roll back if anything does not match.
Can you migrate between different database engines?
Yes. We regularly move data between SQL engines, such as SQL Server or Oracle to PostgreSQL, and onto NoSQL stores like MongoDB when the workload suits it. We recommend the right target during the audit.
Will there be downtime during the migration?
We minimize it. Staged migration with parallel runs lets most of the work happen while the current system stays live, so the actual cutover window is short. For large systems we plan the switch for a low-traffic window.
Do you migrate databases for businesses outside Houston?
Yes. We are based in Houston but run database and data migrations for clients across Texas, the USA, and internationally, handled remotely by our in-house team.
Do you work with Houston businesses in person?
Yes, Houston is our home market. Our office is at 9800 Richmond Ave in the Westchase / Energy Corridor area, and we are happy to meet local clients to plan the migration in person.
Ready to move your data onto a modern database safely?
Book a free call and we will audit your current data, design the target schema, and lay out a staged migration with reconciliation at every step. One in-house Houston team handles the mapping, the ETL, the validation, and the support after cutover.
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