Interested to Buy Any Domain ? << Click Here >> for more details...
Difference between Top down and bottom up approaches for a
given project ?
- 14 Answers
- 112576 Views
- BSNL, CSC, HCL, HP, IIT, Infosys, Siemens, I also Faced
- E-Mail Answers
Answer Posted / koteraj
Top down design proceeds from the abstract entity to get to
the concrete design. Bottom up design proceeds from the
concrete design to get to the abstract entity.
Top down design is most often used in designing brand new
systems, while bottom up design is sometimes used when one
is reverse engineering a design; i.e. when one is trying to
figure out what somebody else designed in an existing system.
Bottom up design begins the design with the lowest level
modules or subsystems, and progresses upward to the main
program, module, or subsystem. With bottom up design, a
structure chart is necessary to determine the order of
execution, and the development of drivers is necessary to
complete the bottom up approach.
Top down design, on the other hand, begins the design with
the main or top-level module, and progresses downward to the
lowest level modules or subsystems.
Real life sometimes is a combination of top down design and
bottom up design. For instance, data modeling sessions tend
to be iterative, bouncing back and forth between top down
and bottom up modes, as the need arises.
| Is This Answer Correct ? | 105 Yes | 35 No |
Post New Answer View All Answers
What is a far pointer? where we use it?
What is the arrow operator in c++?
What function initalizes variables in a class: a) Destructor b) Constitutor c) Constructor
How did c++ start?
What is the difference between public and private data members?
Can we use this pointer in a class specific, operator-overloading function for new operator?
What are the five basic elements of a c++ program?
What is difference between array and vector in c++?
What are files in c++?
Is it legal in c++ to overload operator++ so that it decrements a value in your class?
What is the difference between an external iterator and an internal iterator?
Explain mutable storage class specifier.
Describe Trees using C++ with an example.
Comment on c++ standard exceptions?
How do you define a class in c++?
