How to implement historical data with this EERD?
0
votes
1
answer
38
views
I am looking for a way to implement historical data with the following EERD (what I have tried, below the image):
## What have I tried?
- Temporal tables
> Didn't work because I use MySQL and it has no native support. And also isn't the best solution (when doing natively) because then I am fixed to one database provider.
- History tables
> This is a valid option but some things won't work.
>For example, I change the supplier name, a new record will be added to SupplierHistory table, and the data in the Supplier row will get mutated.
>
>Then lets say for example the next day we change the address that supplier was/is linked to, address gets added into history table, row gets mutated...
>
>But then the History Row of the updated supplier will still be pointing to the old address in the address table?
- isActive strategy
>This is also a strategy, in which I set fields that are current and valid, to isActive true, otherwise false. There is also a problem with this one: my supplier and customer tables are used for login. So I cannot just add a new row for changed data, because it is linked to the Primary Key, ID, and all other tables reference to this. So I need to change the original row, but then there is data loss.
I don't know what to do/try anymore, doees anybody have suggestions?
Thanks in advance,
Kind Regards,

Asked by user23600793
(1 rep)
Mar 16, 2024, 02:56 PM
Last activity: Mar 16, 2024, 11:01 PM
Last activity: Mar 16, 2024, 11:01 PM