Module 3

Before the project team can determine what requirements are appropriate for a given system, there needs to be a clear vision of the kind of system that will be created and the level of change that it will bring to the organization.

Help the analyst lead users through the analysis steps so that the vision of the system can be developed.

The most straightforward (and probably the most commonly used) requirements-analysis technique

Asking the users and managers to identify problems with the as-is system and to describe how to solve them in the to-be system.

focuses on problems, not solutions. It starts by generating a list of problems with the current system and sorting it by order of importance.

Requires a detailed examination of the amount of time it takes to perform each process in the current as-is system

T examines the cost of each major process or step in a business process rather than the time taken.

Refers to studying how other organizations perform a business process in order to learn how your organization can do something better

With this approach, system analysts encourage the managers and project sponsor to pretend they are customers and to think carefully about what the organization’s products and services enable the customers to do—and what they could enable the customer to do.

: Analysts and managers create a list of important technologies and then group identifies how a certain technology could applied to the business and how the business would benefit.

The analysts and managers work together to identify how the organization could eliminate each activity in the business process, how the function could operate without it, and what effects are likely to occur

A standard set of diagramming techniques. Its objective is to create a common vocabulary of object-oriented terms and diagramming techniques.

Show the static structure of the system and its parts on different abstraction and implementation levels and how they are related to each other.

is a central modeling technique that runs through nearly all objectoriented methods.

Represent relationships between instances of types (a person works for a company; a company has a number of offices

The most obvious addition to ER diagrams for use in OO. It has an immediate correspondence to inheritance in OO desig

A form of object composition in object-oriented design.

Show the dynamic behavior of the objects in a system, which can be described as a series of changes to the system over time

Describes a system's functional requirements in terms of use cases