Do you know xBase (VFP) language?
Do you have some older data backup?
Does your data folder contain more files than patients.* ?
If you don’t know the language then you probably cannot fix the database and check all possible dependences.
The DBF version is stored in the first byte of the physical file. You may use some hexa editor to read it.
If you don’t have VFP then you may download the VFP Run-time and some free restricted VFP version.
If you don’t have data backup then you have to use whatever is available but data integrity isn’t guaranteed in such case and other possible files will not be synchronised with your repared file probably.
The error message is also not clear. There is a difference between “database” and “table” .
Does the app folder contain some DLLs which could identify the program version?