lSession
CGI::Session
Apache::Session
Catalyst::Plugin::Session
-> Cache::FastMMap
lSecurity
Authentication
Group
permission roles
HTML field
and SQL field encoding
lDatabase layer
Direct DBI
Simple Class::DBI
ORM Object
Relational Mapper DBIx::Class
Rose::DB
Performance
considerations - DBI 10-100x faster
Data object
attributes - data dictionary - screen dictionary
l