ER - Line or Participation?

[Csanyi Pal <csanyipal sks co yu>]

Hello!

I use Dia v 0.94 on Debian GNU/Linux Sarge system.

I know a little about ER modelling of a database. I searched Internet 
about ER modelling and ER diagrams but find nothing about object named 
with Participation in Dia.

So I wondering in which case should I use a simple line and in which 
case the participation object to draw the ER diagramm of a database.

If I connect an attribute to the entity I should use the line, shouldn't 
I?

I appreciate any advices! Thanks!

-- 
Regards,
Debian Junior Project, DebianEdu, Moodle ->  :-) :-) :-) :-) :-) :-) :-)
http://www.ektf.hu/~Csanyi.Pal (Up to now, it is in Hungarian only.)