The command-line client you launch to manually interact with PostgreSQL is:
a) postmaster
b) mydbadmin
c) psql
d) sqladmin
e) pg_ctl

The PHP function used to initially connect to a PostgreSQL database is:
a) pg_connect_db
b) mysql_connect_db
c) pg_connect
d) pg_exec
e) mysql_select_db

The PHP function used to initially connect to a MySQL database is:
a) pg_connect_db
b) mysql_connect_db
c) pg_connect
d) mysql_connect
e) mysql_select_db

The PHP function used to select a MySQL database is:
a) pg_connect_db
b) mysql_connect_db
c) pg_connect
d) mysql_connect
e) mysql_select_db