Books for you

Over
and above, SysML removes the software aspect from the UML class model, so that
objects can be used in any discipline to describe system structures.
3.3.1 Class
3.3 The Class Diagram
FIGURE 3-5
A simple class model.
class Room model
Room
Table
table *
number of legs
Chair seat
0..2
move()
Furniture
Defi nition
A class describes structure and behavior of objects that have the same characteristics
and semantics. The structure is described by attributes, while behavior
is described by operations.
150 CHAPTER 3 UML??”Unifi ed Modeling Language
A class is the building plan for similar objects. For example, the class customer
in Figure 3.6 describes objects that each have a name, an ID, blocking information,
a PIN check code, and personalized routes for the navigation system. Moreover,
they are capable of verifying whether or not a PIN is correct. All customer objects
meet this building plan. Other examples for classes are car , braking system , current
, or energy .
Each object has a unique identity, regardless of its attribute values.


Pages:
289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313