We already have a database structure, but it is the structure without normalization and very confused and in need of change, but already has a large volume of stored data, for example, all financial data company, which finance department officials are afraid of losing.
We are undecided about remodeling the entire structure of the database and retrieve the most basic and all that is possible, or continue with the same model along with their problems.
I wonder if someone has made a change like this, if you can actually transfer the data to a new structure.
thanks
Yes, it’s called “database conversion”. It is a very common practice, but it must be done carefully and methodically, ideally by someone who has done many of them and knows the pitfalls. It is not to be done casually by any means. Moreover, it is not unusual in the financial sector to run the “old system” in parallel with the new system for a couple of months, to reconcile month-end reports, before saying goodbye to the old system. Running parallel is a PITA, and can only be done if all of the conversion programs are in place, but it’s better to be safe than sorry when the numbers must be correct to the penny.