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The newest discussed topics in the forum "UML Questions"
Updated: 7 hours 39 min ago

hi

July 14, 2010 - 9:49am
hi,

Can i convert activity diagram to sequence diagram in UML default approach Or i should draw activity, sequence, use-case, class diagram and convert the sequence into collaboration diagrm by selecting model menu

Use Case Diagram

June 7, 2010 - 9:53am
hi...

i have drawn usecase diagram to illustrate system functional requirements...but am not sure if its correct...

do appreciate your comments


regards

Can UML used for Procedural language?

June 7, 2010 - 9:53am
Is it compulsory to use UML with Object oriented language? Can we use it with normal procedural language. I am finding Sequence diagram for my project. Can I Use it? I am doing academic project which is based on procedural language.
Do examine wil cut my marks if i use sequence diagram in it?

Can't show inheritence or interface implementation in UML diag.

June 7, 2010 - 9:53am
Hi, I've got some java code that i've Instant Reversed, however the diagram does not show interface implementation.
Specifically i have a class which implements an interface, both are present and visible. However the relationship between them isn't. Same goes for private fields referencing abstract classes (like the strategy pattern). Is there any way to show this?

<URGENT> Class Diagram required for Subscription Automation System

May 18, 2010 - 11:31am
<<URGENT>>

Hi All,

I want to draw a Class Diagram for Subscription Automation System. The description of the problem is as follows:

A company produces a monthly magazine HOST. It wants to create a web-enabled subscription automation system as described below -
HOST is sold on a subscription basis. Subscription to HOST is either paid or free. There are three categories of free subscription. The first category is authors of articles. The second category is the members of the editorial board, who review and edit the articles. The third category is the complementary subscriptions which are sent to gurus of the field, and this complimentary subscription is determined by the editor. Authors of an article receive a one year free subscription from the month their article appears. If they already have a subscription, then the expiration date on the existing subscription is extended for a year. The publisher also has a large list of "prospects", as a trial basis. Many of these prospects have asked for a sample copy, but then decided not to convert to a paid subscription. All of this information is kept in the system.

For paid subscription to HOST, most subscriptions are for a one-year period. If individuals subscribe for multiple years, they receive a 10% discount each year for upto three years. Subscriptions can come by mail, phone or web. The web subscription requires the use of a credit card for payment, while other subscriptions could be paid by check or credit card. When subscribing through the web, one can also check the subscription status or renew. The termination of a subscription, however, cannot be done via web. The termination must be initiated by the customer via a phone, fax or a written request that must be processed by a staff member. For each subscription and cancellation, a confirmation notice is sent via email to the subscriber. Paid subscribers are of two types-corporate or individual subscribers. In the case of a corporate, the primary contact person is clearly designated. Copies can be sent either to office address or home address of a subscriber. Some subscribers live in foreign countries and issues need to be emailed to the foreign countries with proper mailing charge.

A renewal notice is sent to a subscriber several months before the expiration date. On the final month of a subscription, the publisher includes a large note with the magazine that says "this is your last issue". For several months after the subscription has expired, the publisher occasionally sends renewal notices. Thus it is vital to maintain the various subscription information on the database indefinitely.

To simplify the problem, assume -
1. Each subscription is only for one copy.
2. The subscriber is the one who actually gets the issue.
3. The billing address is same as the mailing address.
4. No purchase order or invoice will be sent out.
5. No ordering of back issues will be handled.

How to model this scenarion?

May 13, 2010 - 3:43pm
Hi guys,
I am a bit confused on moding this part. Lets say I have an XML code snippet like this.

[code]
<package>
<informationType name="bookProfileType" type="bookProfileMsg"/>
<token informationType="uriType" name="centralLibraryRef"/>

<roleType name="LibraryRole">
<behavior name="serviceRequester"/>
<behavior name="serviceProvider" interface="libraryServiceProviderWSDL"/>
</roleType>
<roleType name="CentralLibraryRole">
<behavior name="serviceProvider" interface="centralLibraryServiceProvider"/>
</roleType>
<relationshipType name="Library_CentralLibrary">
<role type="LibraryRole" behavior="serviceRequester"/>
<role type="CentralLibraryRole" behavior="serviceProvider"/>
</relationshipType>
<channelType name="CentralLibraryChannel">
<role type="CentralLibraryRole"/>
<reference>
<token name="centralLibraryRef"/>
</reference>
</channelType>
</package>
[/code]

Now, I modelled every xml tag as a uml class. like I have package as class which is composed of all the other
subtags like class:informationType, class: roleType which is agian composed of class:behaviour.
Now my problem is in relationshipType class which is composed of role nad it used type as specified in roleType class and behaviour?

any discussion would be heartly welcomed.

Alt vs alt? Any difference?

May 10, 2010 - 10:23am

Hello guys,

A friend told me that there was a difference in using the terms "Alt" vs "alt" when it comes to UML. I have heard of using "alt" to describe combined fragments on a sequence diagram, but never of using "Alt" in any formal sense. According to him, "Alt" (capitalized) is a formal term for alternative flows and one should know this as part of knowing UML.

As he is only a student (as I am too) can someone clarify this issue? Is using the terms "Alt" and "alt" part of the formal UML language?

Thanks for your response

Sequence Diagram Message Types

May 4, 2010 - 9:19am
Dear All,

Could somebody please explain the difference between the following message types in sequence diagrams: start, call and sequence (an example would be greatly appreciated).

Regards,
George

class diagram: attributes in methods?

May 4, 2010 - 9:19am
Hello

When you create a class diagram do you depict the attributes that's inside a method in the class?

Thanks.
-Mathias

Question about defining actions of operations on attributes

April 22, 2010 - 10:26am
I'm new to UML and have been spending a lot of time over the last few days learning it.. I feel I have a good understanding of how most of the diagrams function, however this one thin is still eluding me... I have created a class diagram, so, for example, I have a class with a few associations and one operation. Lets say that the operation is to "create a new value for the association". I can't figure out, then, which diagram would be used to specify the relationship between this "create new value" operation and a specific association, from what I can tell it would not be done in the class diagram.

Thanks for any advice on this.

System as Actor?

April 16, 2010 - 10:12am
When developing a use case. Is it possible to have a system as a Actor?

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