information system

Topics: Software engineering, Software development process, Security Pages: 5 (1089 words) Published: April 7, 2014
1, Distinguish data from information and describe the characteristics used to evaluate the value of data? Data versus Information
1 ,Data
2, information
3,knowledge.
1, Data raw facts, such as an employee's name and number of hours worked in a week, inventory part numbers, or sales orders .several types of data can be used to represent these facts Data
Represented by
alphanumeric data
numbers, letters, and other characters
image data
graphic images or pictures
audio data
sound, noise, or tones
video data
moving images or pictures

2.Information: a collection of facts organized in such a way that they have additional value beyond the value of the facts themselves. 3. Knowledge : is an awareness and understanding of a set of information and how that information can be made useful to support a specific task to reach a decision. Data -------> The transformation process------> Information

(applying knowledge by selecting, organizing and manipulating data.

2, Compare and contrast components and purposes of Information Technology (IT) and Information Systems (IS) in organizations. Information Systems is a large umbrella referring to systems designed to create, store, manipulate, or disseminate information. Example of an information system is a pencil and a piece of paper. The two objects themselves are just tools, but together they create a system for writing (information). The term Information systems has been around a lot longer than the computer, or the term information technology. .

Information technology falls under the information systems umbrella, but has nothing to do with systems per say. IT deals with the technology involved in the systems themselves, e.g. an information system like wiki.answers.com contains many information technologies. Servers, server operating systems, web-server software (IIS, Apache, et al), and code written for the web-server software (PHP, C#, VB, PERL, Ruby, et al). Even your computer and browser make up part of this information system. Like the pencil and paper example, each one of the mentioned parts of this information system in itself is an information technology. Information Systems Management (ISM) is the application of information technology to support the major functions and activities of either a private sector business or public sector institution. In the past, organizations recognized the importance of managing resources such as labor, capital, and raw materials. Today, it is widely accepted that managing the information resource is very often equally important. ISM supports the process of collection, manipulation, storage, distribution and utilization of an organization's information resources.

Computer-Based Information system are

:An Information System (IS) is much more than computer hardware; it is the entire set of software, hardware, data, people, procedures, and networks necessary to use information as a resource in the organization. These six critical components enable information to be input, processed, output, and stored. Each of these Information System components has its own strengths and weaknesses—its own characteristics and uses. More important to remember, each component of the information system has its own security requirements

security and privacy to information systems.

1. Confidentiality To protect the confidentiality of information, you can use a number of measures, including the following:

Information classification

Secure document storage

Application of general security policies

Education of information custodians and end users

Confidentiality, like most of the characteristics of information, is interdependent with other characteristics, and is most closely related to the characteristic known as privacy

2. Integrity Data integrity refers to the certainty that the data are not tampered with during or after submission. It is the certainty that the data will not be modified or...
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