RSS Feed
Twitter
Structured Analysis and structured Design
Reduce maintenance time and effort
Makes it easier to go back to earlier phases in the life cycle when necessary.
Emphasis on portioning or dividing a problem into smaller, more manageable units and making a clear distinction between physical and logical design.
Object –oriented Analysis and design
OOAD is a third approach to system development, after the process –oriented and data-oriented approaches
Systems development methodologies...
Sunday, 18 August 2013
01:10
Unknown
Advantages of Prototyping models
1. Suitable for large system for which there is no manual process to define the
requirements
2. User training to use the system
3. User services determination
4. System training
5. Quality of software is good
6. Requirements are not freezed.
Limitation of Prototyping Mode
1. It was difficult to find all the requirements of the software initially.
2. It was very difficult to predict how the system will be after development.
These two limitations will be removed...
00:59
Unknown
Advantages of waterfall mode
1. It is a linear model
2. It is a segmental model
3. It is systematic and sequential
4. It is simple one
5. Its has proper documentations
Disadvantages of waterfall model
1. It is difficult to define all requirements at the beginning of project
2. This model is not suitable for accommodating any change
3. A working version of the system is not seen until late in the project's life.
4. It does not scale up well to large project
5. it involves heavy documentation
6....
Friday, 16 August 2013
04:49
Unknown
Introduction.
Once you know the input, the output, the interface, the dialogue, and database for an information
systems, you can design the inside of the system, the part that will make the interface operable, generate
output, and access and update the organization's databases. (Internal design).
We will begin at an abstract level, taking what we already know about a system's processs, in the form
of documented data flow diagrams, and converting them to structure charts. Structure charts graphically
represent...
Subscribe to:
Posts (Atom)
