[GENERAL] Global/persistent variables

[Ronnie Meier Ramos]

I'm analysing a conversion of a system from Oracle to PG. The system in 
case uses a lot of PL/SQL packages and lots of them uses public/static 
global/persistent variables declared inside its package specification or 
body.

AFAIK PG doesn't have packages - this is not a problem since I can 
handle it with different schemas or some naming convention, but is there 
a way to declare persistent variables (that would be "visible" to any 
function up to the end of the session) ?

TIA
Ronnie
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