Author Topic: How we draw a usecase diagram from a case study?  (Read 7594 times)

1180793807

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Re: How we draw a usecase diagram from a case study?
« Reply #30 on: October 16, 2018, 11:27:17 pm »
to draw a use case digram following things to be kept in mind-
1. make a rectangular box in which the actions have to be written.
 suppose for an atm machine has to be drawn so for that we have to first make a rectangular box on center top of which the name of the project has to be given.
2. make action boxes such as messages which has to be displayed, card insertion message, asking for a pin, asking to enter amount, checking the denominations available, checking for cash, etc has to be given, in short what the machine has to do things are generally written here.
3. next comes the actors- two kinds of actors are generally present. primary and secondary.
 for that primary actors will be the normal people who will be going to withdraw the cash and also the cashier who will be re filling the atm machine when the cash goes out. whereas the secondary actor will be the bank database where the records of  client will be there, also the printer which prints the receipt also comes in the category of secondary actors. hence it does not have to worry about whether only living things such as people will only be the actors, instead it will be non living things too can act as the actors. hence actors are those who direct or indirectly are involved in the using of the mechanism.
4. atlast will be the linking line between the actors and the action that means who will be doing what work.

1181278605

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Re: How we draw a usecase diagram from a case study?
« Reply #31 on: October 25, 2018, 10:01:01 am »
steps in drawing UCD=
1. identifying actor= play role in system.
2. usecase= it is elisp shape.define capabilities of system.
3.connector= defines interaction with the system.
4.generalization= used for further specification.
5.stereotype=common action.
6.include relation ship= implecit function.
7.exclude /extend relation ship= explicict function /optional.
8.draw system boundary.
9.name the system.

1182020910

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  • Revol
Re: How we draw a usecase diagram from a case study?
« Reply #32 on: November 21, 2018, 03:28:31 pm »
In a use case diagram, we prepare a basic flow chart or it is necessary to prepare alternate flow chart & exceptional flow chart together???


Kindly clarify.

1182916109

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Re: How we draw a usecase diagram from a case study?
« Reply #33 on: December 14, 2018, 01:36:12 pm »
1. Identify actions against information
2. Identify actors
3. Identify actors which perform above actions
4. Identify essential and support use case
5. Identify the relationship between identified actors and use case.

1191940101

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Re: How we draw a usecase diagram from a case study?
« Reply #34 on: March 23, 2019, 09:35:56 am »

Identify the Actors (role of users) of the system.
For each category of users, identify all roles played by the users relevant to the system.
Identify what are the users required the system to be performed to achieve these goals.
Create use cases for every goal.
Structure the use cases.
Prioritise, review, estimate and validate the users

1191648502

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Re: How we draw a usecase diagram from a case study?
« Reply #35 on: May 12, 2019, 07:03:03 pm »
The following steps are followed
1. Information which we do not model in use case diagrams are
    (i) Name of the systems
    (ii) Architectures
   (iii) Database names
   (iv) Networks
   (v) Brand names
   (vi) Technology names
2. Differentiate information against actions.
3. Write all sequence of actions.
4. Try to find out which actor is performing the above section.
5. Try to identify essential use cases and supporting use cases.
6. Try to identify some modules with respect to functionality.
7. Try to draw the diagram appropriately between use cases and actors

1193059603

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Re: How we draw a usecase diagram from a case study?
« Reply #36 on: June 03, 2019, 01:54:08 pm »
use case diagrams are one of the important and most used diagrams, which usually depicts how an external user interacts with the system.

there are some rules on how to draw an use case diagram from the case study, which are as follows.


1. information that neednot be mentioned in use case diagram is
names of the systems, architectures, databases, brand names, technology names,.

2. differentiate information against actions, information neednot be depicted in diagram.

3. write the sequence of all actions

4.identify primary and secondary actors

5. differentiate between essential and supporting use cases.

6.try to identify which user is performing particular action.

7. draw appropriate relationships between actors and use cases like generalization, include, exclude etc.


1192767805

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Re: How we draw a usecase diagram from a case study?
« Reply #37 on: August 03, 2019, 10:05:53 am »
Steps To draw Use case Diagram.

1.Define Primary actors
2.Define if any actor generalization exist
3.Define secondary actor
4.Define essential use cases (Action)
5.Define specialize use cases
6.Define associations
7.Define include relationship
8.Define exclude relationship
9.Define Automation   

1190244102

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Re: How we draw a usecase diagram from a case study?
« Reply #38 on: August 03, 2019, 07:56:54 pm »
Use case can be indirectly called as mother of all diagrams.
First and most important thing is that go thoroughly the case study and identify the following parameters.
a)Actors
b)system(what they want to develop)
c)Use cases
d)lines(Represents the relationship between them)
Step -1
Differentiate the Actors information and their  assigned work in that particular case study.
NOTE:Actors they may be living or non living things
They should represent by noun
Actors always stay away from system boundary.
Step-2
Write  actions according to sequence.
step-3
Make sure which actor is performing there particular actions.
Step-4
Identify the Essential use cases and supporting use cases.
NOTE:
Essential use cases make sense and gives completeness to end user
Supporting use case supports the essential use case.
step-5
Draw the relationship appropriately between the identify   actors and use cases.

1190763804

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  • Srikanth Raju
Re: How we draw a usecase diagram from a case study?
« Reply #39 on: August 27, 2019, 06:52:38 pm »
Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions (use cases) that some system or systems (subject) should or can perform in collaboration with one or more external users of the system (actors).

Use case diagram is a high level diagram and mother of all diagrams and is shown with an ellipse symbol.

To draw this from a Case Study, we follow below rules –
-   Specify Information against Actions
-   Define all sequence of Actions
-   Find out the Primary and Secondary Actors
-   Define Essential Use cases and Supporting Use cases.
-   Identify some modules with respect to functionality or usage.
-   Draw the relationships appropriately between the identified Actors and Use cases.

1190953311

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Re: How we draw a usecase diagram from a case study?
« Reply #40 on: December 16, 2019, 07:12:51 pm »
how we can define information and content in case study while drawing use case daigram?

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Re: How we draw a usecase diagram from a case study?
« Reply #41 on: December 28, 2019, 12:24:14 pm »
Use case diagram is a high level diagram.The main focus of this diagram will be on"how end users" are interacting with the proposed IT Solution. Use case diagrams can be drawn to give the positive flow of the system.

UCD's have 4 major elements.

1.Actors
2.The system
3. Kines that represent the relationship.
4. The use cases

Steps to Draw UCD:
1. Find the actors involved in the given case study
2.Write a sequence of actions
3.find out which actor is performing which action
4.Identify essential and support use cases.
5.Draw the relationship among the use case and action .

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Re: How we draw a usecase diagram from a case study?
« Reply #42 on: March 02, 2020, 03:39:09 pm »
A Use Case model can be developed by following the steps below.

Identify the Actors (role of users) of the system.
For each category of users, identify all roles played by the users relevant to the system.
Identify what are the users required the system to be performed to achieve these goals.
Create use cases for every goal.
Structure the use cases.
Prioritize, review, estimate and validate the users.

1190246302

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Re: How we draw a usecase diagram from a case study?
« Reply #43 on: March 07, 2020, 03:13:31 pm »
1.Differentiate information against actions.
2. write all the sequence actions.
3.try to find out which actor is performing the above action.
4.try to identify essential use cases and supporting use cases
5. try to identify primary and secondary actions.

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Re: How we draw a usecase diagram from a case study?
« Reply #44 on: March 29, 2020, 04:26:51 pm »
Use case consists of actors, system itself, use cases, the lines which represents the relationships

1.Information which we do not model in the use case diagram
      .Names of systems,data base names,networks , technology names, brand name
2.Differentiate information against actions
3.Write all sequence of actions
4.Try to find out which actor is performing the above action
5.Try to identify the essential use cases and supporting use cases
6.Try to identify some modules with respect to functionality or usage
7.Try to draw relationship appropriately between the identified actors and use cases