REASONS FOR SYSTEMS PROJECT
The starting point for a project is called a systems request, which is a formal way of asking for IT
support. A systems request might propose enhancements for an existing system, the correction of
problems, or the development o
Systems analysts can use a prototype to develop testing and training procedures before the
finished system is available.
Prototyping reduces the risk and potential financial exposure that occur when a finished
system fails to support business needs.
A prototype is an early, rapidly constructed working version of the proposed information system.
User input and approval is essential at every stage of the systems development process.
Prototyping allows users to examine a model that accuratel
System Evaluation Criteria
Does it do what it was design to do? Does it meet the users' major goals? Does it
meet any intermediate or minor goals? If so, which ones?
This could be elapsed time, transaction time, overall processing time, respo
Categories of Information Systems
Transaction Processing Systems
Management Information Systems
Decision Support Systems
Executive Information Systems
Transaction processing systems
Transactions processing systems are aimed at improvin
Developing Software In-House
Companies choose in-house development to satisfy unique business requirements, to minimize
changes in business procedures and policies, to meet constraints of existing systems and
existing technology, and to develop internal r
Why Systems are vulnerable?
The threats to computerized information system can stem from technology, organizational and
environmental factors. The threats can be view from two main aspect, risk to hardware and risk
to application and data.
Risk to hardwar
Implications of Levels of Management
Each of the three management levels holds differing implications for developing computer-based
information systems. Some of the information requirements for managers are clear-cut, while
others are fuzzy and overlap.
FACTORS AFFECTING SYSTEMS PROJECTS
Every business decision that a company makes is affected by internal and external factors, and IT
systems projects are no exception.
User Requests: As users rely more heavily on information systems to perform their jobs,
Intro Ex6 One Code line Programs
Thursday, December 5th, 20:55
The purpose of this homework assignment is to exercise some advanced concepts of python
programming, specifically list and dictionary comprehensions.
Create a directory named i t o c nder you
Intro Ex5 Recursion
Submission deadline: Monday, 25.11.2013, 20:55
Objectives: understand recursive code, write recursive code.
Task: This exercise contains three tasks that you are required to accomplish:
Part A: Convert recursive code to non-recursive c
Intro Ex2 Flow Control
Thursday, 31 October, 20:55
This exercise purpose is to get familiar with some more concepts of python programming, which cover the concepts
we covered at the 2nd Tirgul
This exercise contains several
Ex7: Twitter Trends
Submission deadline - Monday, 16.12.2013, 20:55
What do people tweet?
Draw their feelings on a map
to discover trends.
In this project, you will develop a geographic visualization of twitter data across the USA.
You will n
Ex8: Hash Functions & Data Structures
Submission deadline - Thursday, 26.12.2013, 20:55
This purpose of this exercise is to practice the use and implementation of dynamic data
structures - simulating hash functions and playing with linked lists
Specific DBMS advantages include the following:
Scalability: Scalability means that a system can be expanded, modified, or downsized easily to
meet the rapidly changing needs of a business enterprise.
Better support for client/server systems: I