Object-oriented development is more incremental than traditional structured development.
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What are the principal methodologies for modeling and designing system? Show
The two principal methodologies for modeling and designing information systems are structured methodologies and object-oriented development. Structured methodologies focus on modeling processes and data separately. The data flow diagram is the principal tool for structured analysis, and the structure chart is the principal tool for representing structured software design. Object-oriented development models a system as a collection of objects that combine processes and data. Object-oriented modeling is based on the concepts of class and inheritance. Compare object oriented and traditional structured approaches for modeling and designing systems. Object oriented
Class and inheritance This figures illustrates how classes inherit the common features of their superclass.
Traditional structure
High-level structure chart for a payroll system This structure chart shows that the highest or most abstract level or design for a payroll system, providing an overview of the entire system. For more information, please click here and here. 10.Prototyping is more iterative than the conventional lifecycle.Difficulty:MediumReference:p. 535 Get answer to your question and much more 11.A problem with prototyping is that the systems constructed using this method may not beable to handle large quantities of data in a production environment.Difficulty:EasyReference:p. 536 Get answer to your question and much more 12.End-user-developed systems can be completed more rapidly than those developed throughthe conventional systems lifecycle.Difficulty:EasyReference:p. 536 Get answer to your question and much more 13.One advantage of fourth-generation tools is that they can easily handle processing largenumbers of transactions or applications with extensive procedural logic and updatingrequirements.Difficulty:EasyReference:pp. 536–537 Get answer to your question and much more 14.In some forms of outsourcing, a company hires an external vendor to create the software forits system, but operates the software on its own computers.Difficulty:EasyReference:p. 538 Get answer to your question and much more 15.Systems development activities always take place in sequential order.Difficulty:MediumReference:p. 541 Get answer to your question and much more 16.A data flow diagram offers a logical and graphical model of information flow, partitioning asystem into modules that show manageable levels of detail.Difficulty:MediumReference:p. 529 Get answer to your question and much more 17.A structure chart is a bottom-up chart, showing each level of design, its relationship to otherlevels, and its place in the overall design structure.Difficulty:MediumReference:p. 531 Get answer to your question and much more 18.Object-oriented development is more incremental than traditional structured development. What is the oldest method for building information systems?The systems life cycle is the oldest method for building information systems. The life cycle methodology is a phased approach to building a system, dividing systems development into formal stages.
In which type of systems development the tasks in one stage need to be finished before the tasks in the next stage start?The Critical Path
It is based on the idea that some tasks must be completed before others can begin.
Which organizational change offers the highest rewards but with substantial chances of failure?Faster and more comprehensive change—such as reengineering and paradigm shifts—carries high rewards but offers substantial chances of failure. Paradigm shifts and re-engineering often fail because extensive organizational change is difficult to orchestrate.
When systems are created rapidly without a formal development methodology?Chapter 13. |
