2d barcode generator vb.net See www.omg.org or www.rational.com or search for UML with your browser. in Software

Generator EAN 13 in Software See www.omg.org or www.rational.com or search for UML with your browser.

EXAMPLE 2.6
UPC - 13 Scanner In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Encode EAN 13 In None
Using Barcode encoder for Software Control to generate, create GS1 - 13 image in Software applications.
Construct an object model for a library. The objects in the simple library shown in Fig. 2.6 consist of the library, books, copies of books, and patrons. None of the methods of the objects are shown. The library has an aggregation relationship with book and with patron. That is, the library is really made up of books and patrons. The relationship between book and copy is neither aggregation nor inheritance. The object book represents the abstraction of a book, while the copy is the physical item that is loaned out. The relationship between patron and copy is called loan. From the view of copy, the role is checked out by and from patron the role is check out. The multiplicities indicate that a copy can either not be checked out or can have this relationship with only one patron at a time ( 0.1 ). The other multiplicity, 0.* , indicates that a patron can have zero or one or many relationships of check out at a time.
Recognizing GTIN - 13 In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Paint EAN13 In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create EAN / UCC - 13 image in VS .NET applications.
See www.omg.org or www.rational.com or search for UML with your browser.
Draw EAN-13 Supplement 5 In .NET
Using Barcode printer for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
Create EAN-13 In Visual Studio .NET
Using Barcode creator for .NET Control to generate, create GTIN - 13 image in VS .NET applications.
CHAPTER 2 Software Process and Other Models
Encode EAN / UCC - 13 In Visual Basic .NET
Using Barcode creator for VS .NET Control to generate, create EAN-13 image in Visual Studio .NET applications.
Drawing Code-39 In None
Using Barcode encoder for Software Control to generate, create Code 39 Extended image in Software applications.
library
Draw Barcode In None
Using Barcode drawer for Software Control to generate, create bar code image in Software applications.
Generate Code 128 In None
Using Barcode creator for Software Control to generate, create Code 128C image in Software applications.
patron name address 0..1 checked out by loan 0..* copy status
UPC Code Printer In None
Using Barcode creator for Software Control to generate, create Universal Product Code version A image in Software applications.
Data Matrix ECC200 Creation In None
Using Barcode maker for Software Control to generate, create Data Matrix ECC200 image in Software applications.
book title author
2 Of 5 Interleaved Maker In None
Using Barcode creator for Software Control to generate, create USS ITF 2/5 image in Software applications.
2D Barcode Drawer In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create Matrix 2D Barcode image in ASP.NET applications.
checked out
Generate GS1 - 13 In Java
Using Barcode drawer for BIRT Control to generate, create EAN13 image in BIRT applications.
Create GTIN - 13 In C#
Using Barcode printer for .NET framework Control to generate, create UPC - 13 image in VS .NET applications.
Fig. 2-6.
Drawing ANSI/AIM Code 39 In Visual C#
Using Barcode generation for VS .NET Control to generate, create Code-39 image in VS .NET applications.
EAN-13 Supplement 5 Decoder In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Object model of simple library.
Encoding Data Matrix ECC200 In Objective-C
Using Barcode maker for iPad Control to generate, create Data Matrix 2d barcode image in iPad applications.
UCC - 12 Generation In .NET Framework
Using Barcode creation for Reporting Service Control to generate, create UPCA image in Reporting Service applications.
EXAMPLE 2.7
Construct an object model for a family-tree system that stores genealogical information about family members. Figure 2-7 indicates that everyone has a birthfamily. Every marriage has a father person and a mother person. Many attributes have been left off the diagram, and no functions are shown.
family-tree marriages 1 birthfamily family 0..* marriage 0..* marriage child 0..* father 1 mother 1 people
person
Fig. 2-7.
Family-tree object model
EXISTENCE DEPENDENCY2
One approach to clarifying the relationships is to introduce a di erent relationship called existence dependency (ED). Existence dependency relationships are de ned as follows: A class (parent) can be associated with a lower class (child) if the lower (child) class only exists when the upper (parent) class exists and each instance of the lower (child) class is associated with exactly one instance of the upper (parent) class. This relationship and inheritance can be used to represent any problem domain.
Snoeck and Dedene. Existence Dependency: The Key to Semantic Integrity between Structural and Behavioral Aspects of Object Types. IEEE TOSE, April 1998.
CHAPTER 2 Software Process and Other Models
EXAMPLE 2.8
Construct an object model for a library using the existence dependency relationships. As shown in Fig. 2-6 in example 2.6, all the relationships except loan and library-book satisfy the requirements of existence dependency. The relationship loan does not satisfy it, since a copy object can exist before the existence of the patron object that is checking it out. However, a loan object can be created that does satisfy the ED relationship. The object book cannot be a child of library, since books can exist before and after a specific library. Person is added to the diagram (see Fig. 2-8) to show the part of the patron that is not existencedependent on library.
person name address
library
book title author book
patron pnumber
copy status
check out
loan loan status
checked out
Fig. 2-8.
Library object model using ED.
2.4.2 INSTANCE DIAGRAMS
Object diagrams represent types of objects. Thus, a box labeled car represents the attributes and functions of all cars. Sometimes the relationships between instances of objects are not very clear in an object diagram. An instance diagram shows example instances of objects and may clarify the relationships.
EXAMPLE 2.9
Draw an instance model showing Fred, his wife Sue, their children Bill, Tom, and Mary, and his parents Mike and Jean. (See Fig. 2-9.)
CHAPTER 2 Software Process and Other Models
Fred s family tree Mike s birthfamily Jean s birthfamily Mike & Jean
child father child mother child father mother child
Mike Jean Fred Sue Bill Tom Mary
Fred & Sue
child child
Sue s birthfamily
child
Fig. 2-9.
Instance diagram of Fred s family tree.
Use Case Diagrams
A use case diagram is part of the UML set of diagrams. It shows the important actors and functionality of a system. Actors are represented by stick gures and functions by ovals. Actors are associated with functions they can perform.
EXAMPLE 2.10
Draw a use case diagram for the simple library. (See Fig. 2-10.)
Catalog books
Shelve books
Patron
Borrow
Librarian
Return
Fig. 2-10.
Use case for simple library.
The functions in the ovals are methods of the classes in the object model. The patron object can borrow and return copies. The librarian actor is not an object on the object model. The librarian in the use case shows that some functions for instance, catalog and shelve books are not functions available to the patron.
Copyright © OnBarcode.com . All rights reserved.