A brief introduction about Package diagram (one of UML Diagrams).

1. Package Diagram
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WASI ALI 14005065029
M. YASEEN 14005065046
SYED BILAL 14005065008

2. PACKAGE DIAGRAM
• The PACKAGE DIAGRAM in the UML (unified Modeling Language)
shows the dependencies between the packages that make up a
model.
• Package Diagram show the arrangement and organization of model
elements.
• It can also show structure and dependencies between sub-system or
modules.

3. UML PACKAGE SYMBOLS

4. UML PACKAGE SYMBOLS
• ACCESS: It is defined as directed relationship between an importing
namespace and a package able element.
• DEPENDENCY: Dependency relationship signifies that a single or set of
model elements requires other model elements for implementation.
• IMPORT; It is defined as a directed relationship that identifies a package
whose members are to be imported by a namespace.
• MERGE; It indicates that the contents of two packages are to be combined.

5. PACKAGE
• Package is used to group elements and provides a namespace for the
grouped elements. A package is a namespace for its members and may
contain other packages.
• Package can also merge with other package, thus provide the hierarchical
organization of the package.
• Different types of elements are allow to have the same name.
• Members of the package may be shown within the boundaries of the
package.

6. MEMBERS OF PACKAGE
• Member of the package not shown inside the package.
• Member of the package shown inside the package.
• Member of the package may e shown outside of the
package by branching lines.

7. RELATIONSHIPS
• There are three types of relationship in Package diagram.
• DEPENDENCY:
• GENERALIZATION:
• REFINEMENT:

8. DEPENDENCY
• One package depend on other package.
• Fish depend on water.

9. GENERALIZATIONS
• Generalization show the main branch and its kinds.

10. REFINEMENT
• Refinement show different kind of relationship between packages.
• One package refines another package, if it contain same elements but
offers more details about those elements.

11. PACKAGE IMPORT
• The keyword <<import>> is a indicated relationship between an
importing namespace and imported package.
• The keyword <<access>> is shown to indicate private visibility.
• The visibility of a package import could be either public or private.

12. PACKAGE IMPORT
• Private import of Presentation package and public import of Domain
package.

13. PACKAGE MERGE
• Package Merge indicates that content of one package is extended by
the content of another package.
• Package merge used when elements defined in different packages
have the same name and are intended to represent the same
concept.
• Package merge is shown using a dashed line with an open arrowhead
pointing from the receiving package to the merged package.

14. PACKAGE MERGE
• UML packages constructs and primitive types are merged by UML
Kernel package.

15. PACKAGE RELATIONSHIP
• A relationship between two packages is called a package dependency.
• The dependency relationship between packages is consistent with the
associative relationship between classes.
• EX: If changing the content of a package P2, affects the content of
another package P1, We can say that P1 has a Package Dependency
on P2.

16. PACKAGE RELATIONSHIP
• There are two types of Relationship:
• Unidirectional relationship.
• Bidirectional relationship.

17. PACKAGE RELATIONSHIP
• Unidirectional Relationship: one package have only one direction in
the diagram.

18. PACKAGE RELATIONSHIP
• Bidirectional Relationship: one package have two
direction and one package directed by two packages.

19. Class package diagram

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