Do the embassies of schengen states in japan have central computer control system in visa procession?

Question

do the embassies in Japan operate independently or work hand in hand when processing visa for a visit to schengen states?

Answer 1

yes the schengen countries are linked to a computer systems when checking the application - so they will see if you applied twice

Answer 2

the schengen countries; each have their own embassy located in Japan and are not grouped together;

so, one must pick one country and apply to it ;to ask for a visa.....

no, Japan has no juridiction nor say so, in schengen visa,

each country of the schengen zone,decides on its own.