データベースへのアクセス権
WEB->DBへのアクセス権授与
Web Server構成例
httpd.conf:
....

User nobody
....

DB の準備（参照のみの例）
Web Server用にユーザnobodyとそのDBの作成
% createuser nobody
Enter user's postgres ID or RETURN to use unix user ID: 65534 -> <=
Is user "nobody" allowed to create databases (y/n) n              <=
Is user "nobody" a superuser? (y/n) n                              <=
createuser: nobody was successfully added
Shall I create a database for "nobody" (y/n) y                     <=

ユーザnobodyに表public_classへの検索許可だけを与える
% psql
postgres=> GRANT SELECT ON public_class TO nobody;