Frontend installation : Configure DB connections.

[allenet]

I can't connect to the PostgreSQL database from frontend with the same parameters of zabbix-server which is running well :
Database type: PostgreSQL
Database host: localhost
Database port: 5432
Database name: zabbix
Database schema:
User: postgres
Password:

Note: I can connect remotely to this database from my PC thru PGadmin3.

[allenet]

Versions of products

Zabbix version is 2.4.
Linux is RHEL6.3 x86_64

Thank you.

[allenet]

Database schema.

In the documentation, I saw that, for PostgreSQL database, there is no line for "Database schema".
In the installation PHP that I got, there is a line for it. Is it an error in the new version? Which schema I have to put (there are 4 schemas in the PostcreSQL database)?
Thank you.