Software Engineering For Students: A Programming Approach Part 14 doc

... 114 Chapter 9 ■ Data flow design read data convert check display message message data safe limits status information converted data raw data conversion factors Figure 9.3 Data flow diagram for ... between data flows and modularity 2. the idea of an idealized software structure. The first concerns the data flow diagram. Why exactly do we draw a data flow diagram and what is its signific...

Ngày tải lên: 03/07/2014, 01:20

... of interaction is available in some programming languages and most oper- ating systems. Within the Java library, the classes java.io.PipedInputStream and java.io.PipedOutputStream allow a producer ... important? 6.2 Argue for and against restricting components to about seven statements. 6.3 Look at the way that the library methods are called within a library available to you – say th...

Ngày tải lên: 03/07/2014, 01:20

... classes: 1. classes that handle the user interface 2. classes that access the database 3. classes that handle the central logic of the program. We create three packages, named gui, database and ... clarity and orthogonality of the language, the language syntax and facilities for control and data abstraction. We reviewed these features in Chapters 14 and 15. By programming in the large,...

Ngày tải lên: 03/07/2014, 01:20

... that they can be mass-produced and therefore can be made cheaply, whereas software checks are tailor-made and may be expensive to develop. Additionally, checks carried out by hardware may not affect ... matter how much the software is damaged by a fault? – after all it is merely code in a memory that can easily be re-loaded. The answer is “yes” for two reasons. First, the damage cau...

Ngày tải lên: 03/07/2014, 01:20

... consists of a repeated cycle of small steps designed to assess and deal with risks at every cycle. Thus the spiral model is termed an iterative approach. 22.1 You are preparing a meal for special guests. ... decision as to which minimal-risk approach to use depends on factors that are peculiar to the organization, such as the availability of appropriate people. Writing the driver in...

Ngày tải lên: 03/07/2014, 01:20