Question

Discuss the pros and cons of:

– functional decomposition,

– data flow design,

– design based on data structures, and

– object-oriented design

for the design of each of:

– a compiler,

– a patient monitoring system, and

– a stock control system.

Answer 1

The pros and cons of:-

Pros of Functional decomposition :-

• Functional decomposition corresponds to various functional relations .
• It have to mainly focus on how the overall functionally developed.
• It has used during the project analysis phase in order to produce.
• Function decomposition is done after meeting with business analysis.
• Function decomposition is first level component with their functions,.
• It have perform an end to end walk through of the business operation

Cons of Function Decomposition:-

• Compared to imperative programming ,in functional programming ,we have less chance of creating "spaghetti code" programs.
• So use of functional decomposition depends upon type of problem.
• it have to improve different area but programming style even one does not apply it actually.

Pros of data flow design:-

• Data flow diagram describing the boundaries of the system.
• It have beneficial communicating existing system knowledge to the users
• It have ot straightforward graphical technique which is easy to recognize
• DFD can provide a detailed representation system.
• data flow diagram easily understand by technical and non-technical audiences.
• It have support the  logic behind the data flow within the system.

Cons of data flow Diagram :-

• Data flow diagram make programming confusing concerning the system.
• It have drawback of simply take long time create ,so long that the analyst may not receive support from management to complete.
• It physical considerations are left out.

Pros of design based on data structures:-

• data structure allows easier processing data.
• it allow information stored on disk varry efficiently .
• it have provide management of data base like indexing .
• it have to secure way of storage of data.
• it allows processing data on software system.

Cons of design based on data structures:-

• It has applicable only for advanced users.
• if any issue occurs it can solve by experts.
• it have slow access in case of some data types.

Pros of object-oriented design:-

• Object oriented design have support important features of loop like
• Abstraction
• Encapsulation
• Polymorphism
• inheritance

Cons of object-oriented design:-

• Only one of cons object oriented design .it is difficult to understand for beginners..

for the design of each of:

– a compilerdata flow design

design based on data structures

a patient monitoring system:

data flow design

a stock control system

a stock control system of DFD