[SQL] URL activation through trigger

Hi, I am using Postgres 7.3.4. I want to write a trigger for insert, update, delete operation on say, user table. This trigger will activate an URL. URL will be as: http://sandeep/Trigger?userid=4&name=sandeep where, userid and password will be parameters to send. They may taken from

[SQL] Foreign Key relationship between two databases

Hi, I am using postgres 7.3.4. I am new to postgres. I can give foreign key relationship between two tables of same database. Can I give foreign key relationship between tables of two databases ? Plz, let me know if possible & send me how can I do that? Thanks & Regards, Sandeep. --

[SQL] How to check postgres running or not ?

Hello Sir, I want to know how to check whether postgres database is running or not ? when I give command like ./postmaster -i &, whether all databases in that postgres will run or any one [default] ? If any one, then how to detect that database ? Thanks and regards, Sandeep. ---