[pgadmin-support] Can you help me?

Dear PostgreSQL Admin!   I'm a new programmer in PostGreSQL, and I just have Windows environment, that is my problem, I tried to search and looking any website can help me download PostgreSQL Windows Installer version, but untill now, I still not get it.   Can you show for me any Website have

[pgadmin-support] Cannot see foreign key

Good day! Why is it that when I added a foreign key, it is not displayed in pgAdmin and when I clicked that table I got this message... An error has occured in pgAdmin II:fromMain.tvTable: Number 457 Description:This key is already associated with an element of this collection What are the poss