V2 Organization of database files

[info at vallemediatime.com]

Hi Ruslan,
The Valentina DB default files are (4): .vdb   .dat   .blb   .ind

I need to understand what number of files is better for my project.
e.g.
I'm working on a DB with 19 table and 12 binary-link.
All data are string (or number stored like string)
When I launch my DB I automatically create a copy of folder with 4 files.
...
You suggets what to me?  
Thanks 
Paolo