Hi James, Is the association class of Employment conceptually a "role" played by a Person in a Company. I.e. what Coad refers to it in "Java Modeling ... using UML"? I'm not really sure if you've read the book, anyway. Thanks, George >From: "Baker, James D" <[EMAIL PROTECTED]> >Reply-To: "Baker, James D" <[EMAIL PROTECTED]> >To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> >Subject: RE: (ROSE) would anyone give me an detailed explaination of assoc >iation >Date: Thu, 21 Dec 2000 07:30:02 -0800 > > >See if this makes any sense to you. > >If you have a Person class and a Company class, then one association >between >Person and Company might be Employment. Employment has several attributes >you might want to maintain, such as start date, current salary, vacation >days accrued, etc. In this case, the association would be modeled as a >class. > >To generalize from this example, association classes are used when you want >to specify attributes and operations for an association. There is a >constraint placed on the association class that there can be only one >instance of the association class for any set of instances of the other two >classes. > >HTH, > >J.D. Baker >My ideas, my words. You can't blame anyone that might employ me for them. > >-----Original Message----- >From: daniel wang [mailto:[EMAIL PROTECTED]] >Sent: Thursday, December 21, 2000 6:40 PM >To: [EMAIL PROTECTED] >Subject: (ROSE) would anyone give me an detailed explaination of >association > > >hi : > i don't really understand the association class in uml. when i should >make use of them? >best regards > >daniel > >************************************************************************ >* Rose Forum is a public venue for ideas and discussions. >* For technical support, visit http://www.rational.com/support >* >* Admin.Subscription Requests: [EMAIL PROTECTED] >* Archive of messages: >http://www.rational.com/products/rose/usergroups/rose_forum.jtmpl >* Other Requests: [EMAIL PROTECTED] >* >* To unsubscribe from the list, please send email >* >* To: [EMAIL PROTECTED] >* Subject:<BLANK> >* Body: unsubscribe rose_forum >* >************************************************************************* > _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. ************************************************************************ * Rose Forum is a public venue for ideas and discussions. * For technical support, visit http://www.rational.com/support * * Admin.Subscription Requests: [EMAIL PROTECTED] * Archive of messages: http://www.rational.com/products/rose/usergroups/rose_forum.jtmpl * Other Requests: [EMAIL PROTECTED] * * To unsubscribe from the list, please send email * * To: [EMAIL PROTECTED] * Subject:<BLANK> * Body: unsubscribe rose_forum * *************************************************************************
