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I will migrate sql server to postgresql with zero data loss
Legacy Database Modernization Consultant
Legacy Database Consultant specializing in Microsoft Access modernization, SQL Server and PostgreSQL migrations, reporting automation, and business intelligence solutions.
For 25+ years, I've helped...
About this Gig
Are legacy database crashes, slow queries, or character encoding issues holding back your application? I provide enterprise-grade PostgreSQL migrations, schema translation, and backend modernizations - ensuring zero data loss and seamless execution.
WHAT I MIGRATE TO POSTGRESQL:
Microsoft SQL Server & MS Access Backends
MySQL / MariaDB & Legacy ERP Databases
Flat Files, CSVs, and Unstructured Data Pipelines
WHAT YOU GET:
Schema & DDL Translation (Tables, Primary/Foreign Keys, Constraints)
Automated Data Ingestion & Batch ETL Pipelines
UTF-8 Character Encoding Remediation (Fixes Special Char Crashes)
Audit-Ready Row Count & Checksum Validation Report
SCOPE BOUNDARIES & EXCLUSIONS:
Standard packages cover backend data, schemas, and table migration.
Rebuilding or debugging custom frontend UI, application forms, reports, or third-party web apps is NOT included in base data migration.
Pre-existing historical data corruption requires a custom quote.
Every database is unique. Please send a direct message with your source engine and table size BEFORE ordering to ensure the exact scope and custom milestone for your project!
Other Databases Services I Offer
FAQ
What details do you need before I place an order?
Please send a direct message with: 1. Your current source database engine (e.g., MS Access, SQL Server, MySQL). 2. Approximate database size and table/row count. I will review your setup and confirm the exact package or custom offer needed.
How do you ensure no data is lost during the migration?
I perform an automated row-count reconciliation and checksum/hash validation across every table post-migration. You receive an audit report verifying that 100% of your source data matches the target PostgreSQL database before project sign-off.
Does this Gig include rebuilding or fixing my front-end forms/application?
No. This Gig focuses exclusively on backend database modernization (tables, schemas, indexes, data transfer, and linked tables). Application-level fixes, form UI redesigns, or custom VBA/API debugging are excluded from base data migration packages but can be quoted as a separate custom milestone.
How do you handle special characters or encoding crashes during migration?
I utilize custom ETL routines to remediate character encoding mismatches (such as Windows-1252 to UTF-8). This fixes string truncation and syntax errors caused by special characters, symbols, or multi-byte sequences.
Can you perform migrations on databases with live/active users?
Yes. For active systems, I perform dry-run staging migrations to measure batch transfer speeds. Then I will schedule the final cutover during your low-traffic or offline maintenance window to minimize business disruption.
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
F frentil
Switzerland
Jennifer provided exceptional data migration and automation services. Right from the start, her professionalism and proactive communication were evident. She meticulously handled every detail, ensuring a deep understanding of my project needs. Jennifer's work was exemplary, seamlessly migrating and designing my data infrastructure with precision.
$100-$200
Price
2 days
Duration
Helpful?V vic_fivver
Romania
We start with one "scenario" in mind but in data migration "inevitable" could happen. Finally, we adopt a step by step approach and reach together the finish line. I recommend Jeff as a good professional person in "working with databases". Thank you Jeff.
$100-$200
Price
Helpful?G 
gianluciani
Panama
Great work!
$50
Price
Helpful?
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
F frentil
Switzerland
Jennifer provided exceptional data migration and automation services. Right from the start, her professionalism and proactive communication were evident. She meticulously handled every detail, ensuring a deep understanding of my project needs. Jennifer's work was exemplary, seamlessly migrating and designing my data infrastructure with precision.
$100-$200
Price
2 days
Duration
Helpful?V vic_fivver
Romania
We start with one "scenario" in mind but in data migration "inevitable" could happen. Finally, we adopt a step by step approach and reach together the finish line. I recommend Jeff as a good professional person in "working with databases". Thank you Jeff.
$100-$200
Price
Helpful?G gianluciani
Panama
Great work!
$50
Price
Helpful?
