Need integration Postgres and SQL Server update if exists

I have 2 databases (SQL Server) X and another POSTGRES Y.

Well, I need you to enter a particular row in a Postgres Y table, automatically check if there is this same record in the X table of SQL Server, if there is no record then copy/update.
If the registration already exists, then do not copy.

Because I have two systems that need integration.

 

Example:

 

P o s t g R e s         SQL Server
People people     
Name Name
Phone Phone

"Roger ", "12345 "

 

Please help, some script or solution that can do that.

Thank you.