Bài giảng UML cho lớp 55PM1, Khoa Công nghệ thông tin, Trường Đại học Xây Dựng, ngày 14 tháng 01 năm 2014.

1. UNIFIED MODELLING LANGUAGE
Subject presented by:
Dr. Trần Khánh Dung
Department of Software Engineering
Email: khanhdung218@yahoo.com
01- 2014

2. Outline
● Goals
● Model & Modelling
● UML?
● Tools?
● UML Diagrams
● Review
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3. Goals
•
Equipes IT students with knowledge about
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•
basic elements and diagrams of the UML
Helps IT students
•
•
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to use the UML elements
to model and design information systems by UML
to build software effectively
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4. Model?
●A
model is a simplified representation of a certain
reality.
There can be many different
maps of the same territory,
depending on the purpose:
- riding a bike,
- visiting museums,
- analyzing votes,
- etc.
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5. Model?
● Each
model captures a certain aspect/view of the
system
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6. Model?
● A model is focused in one particular aspect of a system:
● A model is not intended to capture all the aspects of a
system, but mainly to abstract out only some of these
characteristics.
● A system is usually represented by a set of different
models, each one capturing some specific aspects.
● Which aspects to capture depends on the purpose of
the model.
● A model must not represent the system with absolute
preciseness.
● A model is useful because it is a simplified copy.
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7. Modelling?
●Modeling
is the cost-effective use of
something in place of something else for
some cognitive purpose. It allows us to use
something that is simpler, safer or cheaper
than reality instead of reality for some
purpose
●Modelling allows us to deal with the world
in a simplified manner, avoiding the
complexity, danger and irreversibility of
reality
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8. Modelling?
● The representation relationship
A model should be able to answer a given set of questions in
the same way the system would answer these same
questions.
You can ask the map certain questions, but not others.
(+) What is the distance from Madrid to Warsaw?
(-) How many whales are there in the oceans?
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9. Modelling?
● A model is a partial analogy of a system
●
●
The analogy between the model and the represented reality is
partial.
The properties of the model are not identical to the properties of
the reality.
I can’t smoke with this pipe!
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10. Modelling?
● The conformance relationship
●A
model is a simplified representation of a certain
reality, according to the rules of a certain modeling
language
The map conforms to its
legend.
The legend defines the
language to read the map.
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11. UML?
● Unified
Modeling Language (UML) is a standardized ,
general-purpose modeling language in the field of software
engineering. The UML includes a set of graphic notation
techniques to create visual models of object-oriented
software-intensive systems.
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1990s: The UML was developed by Grady Booch, Ivar
Jacobson and James Rumbaugh at Rational Software
1997: It was adopted by the Object Management Group (OMG) and
has been managed by this organization ever since
2000: The Unified Modeling Language was accepted by
the International Organization for Standardization (ISO) as industry
standard for modeling software-intensive systems
The current version of the UML is 2.4.1 published by the OMG in
August 2011 ( http://www.omg.org/spec/UML/)
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12. UML tools?
● Visual Paradigm for UML (community edition)
●
http://www.visual-paradigm.com/download/vpuml.jsp?edition=ce
● Modelio (Modeliosoft)
● StarUML (Plastic Software)
● Enterprise Architect (Sparx System)
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13. UML Diagram
Diagram I
Class Diagram
● What is Class?
● Class Diagram Elements
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14. Class Diagram
● Description
● A class diagram is a type of static structure
diagram. It represents static aspect of a
system by showing the its classes (their
attributes
and
operations),
interfaces,
associations and generalizations
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15. Class Diagram elements
● Elements
● Class
● A class is a definition of objects that share
given structural or behavioral characteristics. A
class comprises a name, a number of attributes,
and a number of operations
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16. Class Diagram elements
● Elements
● Class
● Attribute: An attribute is a typed value
attached to each instance of a class
● Operation: An operation is a function that
can be performed by instances of a class.
An operation may have return type in case it
returns a value
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