Complete Notes for all chapters in Object Oriented Analysis and Design - Ali Bahrami
Complete Notes for all chapters in Object Oriented Analysis and Design - Ali BahramiFull description
OOAD MCQFull description
ffdffddfFull description
Complete Notes for all chapters in Object Oriented Analysis and Design - Ali BahramiFull description
An Operating System or OS is the most important software and program that can run all types of Computer, Mobile phone, Hand Held Device, etc. It helps to connect and interface computer hardware to program and application software and other common ess
Library Management System. CASE STUDY Use Case Diagram:- Library Management System
THIS PROFORMA IS DESIGNED TO MAKE THE MBBS STUDENTS TO UNDERSTAND WHAT ALL TO ASK A PATIENT WHEN TAKING AN EXAM CASE
Full description
THIS PROFORMA IS DESIGNED TO MAKE THE MBBS STUDENTS TO UNDERSTAND WHAT ALL TO ASK A PATIENT WHEN TAKING AN EXAM CASE
THIS PROFORMA IS DESIGNED TO MAKE THE MBBS STUDENTS TO UNDERSTAND WHAT ALL TO ASK A PATIENT WHEN TAKING AN EXAM CASE
Library Management System Case Study for students of Software Engineering in Second Year B.Sc. Computer Science and B. Sc. Information Technology
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Full description
Implementation
UNIT 3 CASE STUDY: INVENTORY CONTROL SYSTEM Structure
Page Nos.
3.0
Introduction
40
3.1
Objectives
40
3.2
Class Diagram
40
3.3
Object Diagram
41
3.4
Generalization and Association Diagram
42
3.5
Collaboration Diagram
44
3.6
Activity Diagram and Events
44
3.7
Use Case Diagram
48
3.8
Deployment Diagram
49
3.9
Summary
51
3.0 INTRODUCTION Inventory control systems are used for managing the stocks of companies and big distribution organisations. In this unit we will discuss about OOM for invention control systems. We will cover class diagram design, object diagram different kind of relationships, which include generalization, association and collaboration. We will also discuss use case diagrams activities and events.
3.1 OBJECTIVES After going through this unit, you should be able to: •
explain class diagram and object diagram of Inventory control System;
•
describe generalization and Specialization of the system;
•
describe collaboration diagram of the system;
•
explain different activities and events of the systems, and
•
explain deployment Diagram.
3.2 CLASS DIAGRAM You know that a class is represented in a box like figure. Here we are taking the case study of Inventory Control System. Let us first set an idea of the Inventory Control System. It is the system in which you can manage the stock of the products that a company sells. Basically, this system is stock oriented where it makes sure that the quantity-in-stock does not reach the danger level (Qty-ordered>Qty-in-stock). In any system when we reach this level, we place a new order. To avoid this situation, when in our system Qty-in-stock reaches a minimum level called the Reorder-level then a new order is placed. Here, in this case study, you will see various diagrams. 40
Receipt-no Sale-of- sale Qty-sold Detailed Item Sale () Daily Report Sale () Generate ()
Generate () View ()
View ()
Figure 2: Class diagram
3.3 OBJECT DIAGRAM Object Diagram is an instance of a class. It describes the static structure of a system at a particular time and are used to test the accuracy of classes.
41
Implementation
Generate
Enter
Report
Product Details
Prod. No PRODUCT INVOICE
Bills of Material
SUPPLIER
Invoice No.
Order by by NEW
EXISTING
New realise
Old
Cust Code
Order- no
CUSTOMER
Name address
Places an order
ORDER
details
Update Identifies
details Validation Order
Order received Update Stock Qty-Stock
Updates Files
Order-no Cost-no Prod-no
Validate Order
Dispatch Order Order Details
Figure 3: Object Diagram
3.4 GENERALIZATION AND ASSOCIATION DIAGRAM Generalisation: This is another name for inheritance, or an “is a” relationship. It refers to a relationship between two classes where one class is a specialized version of another. 42
Case Study: Inventory Control System
Super Type
Sub Type 1
Sub Type 2 CUSTOMER Name: string
Credit ()
Customer
Regular Customer PRODUCT
Existing Product
New Product
Figure 4: Generalisation of customer and product
Association: This represents static relationship between classes. Roles represent the way the two classes see each other. name
Class A
Class B n role
1 role ORDER
CUSTOMER n
Date-of order: date Order-no
1
Customer details m
n
n SUPPLIER m
Supplier Details
Figure 5: Association of Order and customer
Aggregation: This denotes a strong ownership between class A, the whole, and class B, and its part. Hollow Diamond
Simple Aggregation
Filled Diamond
Strong Aggregation
PRODUCT
INVOICE
ORDER
ORDER
CUSTOMER
SUPPLIER
Figure 6: Aggregation
Ternary Association for Customer Supplier CUSTOMER
SUPPLIER
PRODUCT
Figure 7: Ternary association
43
Implementation
3.5 COLLABORATION DIAGRAM This represents the interactions between objects as a series of sequenced messages. Collaboration diagrams describe both the static structure and the dynamic behaviour of a system.
Representation Object: Class 1.2: [Condition] Message
1. Message 2. Message 3. Message
Object: Class
Object: Class
2.3 [Condition] Message
Actor
Object: Class
Figure 8 a: Collaboration diagram for inventory control system
: SUPPLIER SUPPLIER 1 places an order
2.0 [SUPPLIER] Invoice
3.0 [In Stock]
: ORDER
: STOCK Delivery new ()
Customer
New product 1 [In order] 1.1
: PRODUCT
Figure 8 b: Collaboration diagram for the inventory control system
3.6 ACTIVITY DIAGRAM AND EVENTS STATECHART DIAGRAM This describes the dynamic behaviour of a system in response to external stimuli •
Basically, states are triggered by specific events.
Representation: Initial state
State Final state
event/action
Activity Diagram This illustrates the dynamic nature of a system by modeling the flow of control from activity to activity, or you can say operation on some class that results in a change in the state of the system. 44
•
Basically, this shows the workflow model, or business process and the internal operation
Case Study: Inventory Control System
: Class
Activity
Activity : Class
Figure 9: Activity flow
Synchronization and Splitting of Control •
A short heavy bar with two transitions entering it represents a synchronization of Control. Splitting of Control that creates multiple states.
•
Synchronization
Splitting of Control
Demand Occurred [Valid]
[Valid demand]
Check QTY-in-stock Cancel Demand Validate the Order
Place the Order
[Rush order]
[else]
Reverse Order Overnight Delivery
Regular Delivery
Demand Occurred
Payment Made
Figure 10: Activity diagram
Events Actions taken in Inventory Control System: 1) 2) 3) 4) 5)
Order is placed by the CUSTOMER Order is received by the SUPPLIER Checking of Quantity-in-Stock and Reorder-level Checking of Inventory Status Generating Bills of Material 45
Implementation
6) 7)
Generating the INVOICE VOUCHER Updating Inventory Status File
Main screen Do: display Customer/Supplier
Select
Do: Place the Order
Validation
Do: Verify the Order
Order
Order Rejected Order OK Sector the Order
Rejected Order Do: reject the Order
Do: check min. Qty-in-stock
Cancel Do: cancel the Order
Min Qty >qty-in-stock Reorder Level Display Do: finish process
Update Do: Update Inventory Status File
Do: Display Bad Message
Generation Do: Generate INVOICE
Generate Do: Generate Bills of Material (BOM)
Figure 11: State diagram
46
<>
Place an Order <>
Generate INVOICE <>
<> Update Inventory Status File
Generate Receipt
Case Study: Inventory Control System
<>
Invoice of an item for Customer
Invoice of the item for Supplier
Receipt for Supplier
Receipt of an item for Customer
Place an Order <>
<>
<>
Validate the order
Check Qty-in-stock
Figure 12: Adding details
Data Flow Diagram for System Order Master File
Order details
Places
1.0
demand
Places an order
CUSTOMER
1.0
Check
Validation Order
Validate the order
Invalid 1.2 2.0
Order
Check Reorder level
Display error Msg
8.0 Generate Invoice Voucher
Validated ROL OK Qty-in-stock
2.0
trans details Transaction File
Valid ROL & Qty-instock
2.1 Reject the Order
4.0
5.0
Generate Bills of Material
Update Inventory Status
Inventory File
Figure 13: Data flow diagram
47
Implementation
3.7 USE CASE DIAGRAM A “uses” relationship indicates that the use case is needed by another in order to perform a task •
An “extends” relationship indicates alternative options under a certain use case.
•
Use case diagrams model the functionality of a system using actors and use cases.
•
Use cases are services or functions provided by the system to its users.
Use Case
Use Case (Actor)
Use Case
Figure 14: Use Case diagram
For Inventory Control System the initial design is: SUB DIAGRAM INVENTORY CONTROL SYSTEM
Place an Order Place an Order <>
<>
<>
Generate INVOICE
Actor (Customer)
Update Inventory Status File
Generate INVOICE
Generate BOM Update Inventory Status File
Generate BOM
Figure 15: Initial design of the Inventory Control system
48
Case Study: Inventory Control System
USER INTERFACE Interactive Display
Run Program
Power on Load Standard Program
Operate enter Display Menu Screen do: show Customer
Display Supplier Screen Do: show supplier
button
Run entries are set
Select Run Program
Set supplier & Customer code Display Order Screen do: show order details
Set upon Order
HOLD
60 Sec without input Setup Set Qty-in-stock
Set Order Qty
Set Qty-in-stock
Set Order Qty
Set Program
To View
Generating report mode
Generate Bills of Material entry Report
Run Button
Generate Invoice Voucher
Press
Invoice Card Button
Generate Inventory Status Report
Press
Report Button
Figure 16: User interface
3.8 DEPLOYMENT DIAGRAM Deployment diagram: This shows the hardware for your system, the software that is installed on that hardware, and the middleware that is used to connect the machines to one another.
49
Implementation
•
Deployment diagrams depicts the physical resources in a system including nodes, components and connections, where a node is a physical resource that executes code components.
Node Component
Figure 17: Deployment
Web Server INVENTORY CONTROL SYSTEM <>
<> CUSTOMER
JDBC
<> DB Server Inventory DB <>
SUPPLIER
{order=order}
PRODUCTS
<> Placing of Order Execution: thread Nested Transaction: True <> Servlets
Inventory Control Series <>
Web Server <>
Inventory Control War
<> :App” Server : EJB Container customes. ear supplier. ear product. ear order..xml <> Inventory gmt. jar
M
Figure 18: Deployment diagram
50
<> Inventory DB
3.9 SUMMARY
Case Study: Inventory Control System
In this unit different diagram are design to represent OOM of inventory control system. These diagrams are: •
