Maria Lourdes C. Capiitan

SysAnal(O0A)

July 22, 2008

Book Review

Systems Analysis and Design Methods

Jeffrey L. Whittten and Lonnie D. Bentley

QA 76.9 S88 W48 1998

Quote(Chapter VII): “Necessity is the mother of invention”, ”Develop business avvy. Talk to your management and users why talk to technical networking specialist.”

Networking modeling

It is a diagrammatic technique used to document the shape of a business or information system in terms of its business locations.

Location Connectivity Diagram

It is logical network modeling tool that depicts the shape of a system in terms of user, process, data and interface locations and necessary interconnections between locations.

Location

·        Users exist to use or interact with information system.

·        It is place where business can be transacted.

·        There is no universal for locations

·        In need for precise symbolic notation to recognize the above variations.

Logical locations

            It is where people do work.

Places where data are collected, work is performed, information is needed.

Logical locations can be

·        Scattered through out the business for any given information

·        On the move

·        External to enterprise

Logical locations can be represented as

·        Cluster of similar locations

·        Organizations and agents outside of the company

Decomposition

·        Should not be a new system concept

·        Act of breaking a system into its component subsystems

·        Allows to partition a system into logical subsets of location for improvement

Location decomposition diagram

It shows the top down geographic decomposition of the business locations to include in a system. one view of system geography.