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Data Migration Services
EVERY RECORD,MOVED ANDACCOUNTED FOR
We move business data from one system to another and prove that it arrived, with a field-by-field mapping, rehearsed test migrations and reconciliation of counts and values before the old system is switched off.
A migration is complete when the totals in the new system can be traced back to the old one, record by record and value by value.
Moving your data and proving it arrived
- 01Documented field map
- 02Test migrations
- 03Reconciled results
Data migration transfers records from an old system to a new one, changing their structure on the way. We profile the source data, agree a mapping for every field, write repeatable scripts that extract, transform and load it, run trial migrations and reconcile the result against the source until both sides agree.
It suits companies replacing an ERP, CRM, accounting package or custom application, merging systems after an acquisition or consolidating spreadsheets into a database. The hard part is rarely the copying. It is the duplicates, missing values and unwritten rules in the old data, which we surface early so that decisions about them are made by the people who own the records.
Talk to us about your projectCapabilities, End to End
What It Looks Like When It Ships
From Kickoff to Launch
We examine the source systems, measure data quality, agree with you which records and history must move and which can be archived, and identify the people who own each data set.
The mapping workbook is completed with the business owners, cleansing rules are agreed and the migration scripts are written and tested against copies of the real data.
Full trial migrations run into a test copy of the new system. Counts and values are reconciled, users check familiar records and each cycle shortens the list of differences.
On the agreed date the old system is frozen, the final migration runs to a timed plan, reconciliation is signed off and the new system opens with the old data kept read-only.
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What buyers ask before they start
If yours is not here, ask us directly. The first conversation is free and useful whether or not we work together.
Book a callThrough reconciliation. For each data set we compare the number of records in source and target, totals of key amounts such as balances and quantities, and samples of individual records checked field by field. Every difference is either corrected or explained by a documented rule, for example merged duplicates. The report is signed off by the business owner before the old system is retired.
We measure it first and then let the owners decide. Some problems are fixed by rule during migration, such as standardizing formats or merging clear duplicates. Some need a person to choose which record is right. Some are best left behind in an archive. Moving bad data unchanged into a new system is the most common reason replacements disappoint, so this stage receives real time.
Enough to run the business and meet legal retention, and usually less than everything. Open transactions, current customers and recent history normally move in full. Older closed records can often stay in a searchable archive, which makes the migration smaller and the new system cleaner. We set out the options with their effort, and finance and compliance make the call.
That depends on data volume and how the systems are used, and the rehearsals tell us precisely. Most cutovers are planned for a quiet period, with the old system frozen while the final run and checks complete. Where downtime must be very short, we migrate the bulk of the data in advance and move only recent changes during the switch.
Usually. If the database can be reached, we read it directly. If not, we use the vendor's interface, scheduled reports or, as a last resort, automated reading of screens. Each route has limits that we explain before starting. Old systems also hold rules in their code that the data alone does not show, so we work with a long-standing user to interpret unusual values.
