Nowadays internet is increasing day by day. today i will talk about internet and world wide web.
1- Difference between internet and WWW:

2- Major networking and computing technologies introduction:

3- Internet past, present and future:

4- Web base computing:
Web current computing model include service side computing ( CGI) and client side computing.
there are limited computing models.
Were initially designed for processing fill-out form.

5- Computing using CGI:

6- Web based systems:
Compute server with

Dynamic Class Loader

Security Manager

Client (applet, CGI script, stand-alone)

Logging facilities

Searching for compute resources

Broker

HOW INTERNET INFRASTRUCTURE WORKS?

How an email message may travel from a sender to reciever?

WEB 2.0

1- Elements of web 2.0

2- Categories of web 2.0: consist of social network, mashups and aggregators.

social network

aggregators:

mashups is a web site that takes different content from a number of other web sites and mixes them together to create a new kind of content.

Compare between web 1.0 and wed 2.0

WEB 3.0

Web 3.0 is about semantic web (or the meaning of data), personalization (e.g. iGoogle), intelligent search and behavioral advertising among other things .

 Web 3.0 is based on intelligent web applications using:

- Natural language processing

 Machine-based learning and reasoning

 Intelligent applications

This week I have learnt about web application. There are so may type of web

1-      Web application is a piece of software. It can run on the internet or computer or whatever electronic devices.

      Web browser   are software applications that allow users to retrieve data and interact with content located on web pages within a website

3-      Web pages are web document or we could call it HTML. There are two type of web pages: static web ( web 1.0) and dynamic web ( web 2.0)

a- Static web ( web 1.0) is a web page which can read only. This web allows the people search information and read it. The customer can’t allow to contribute this web.

b- Dynamic web (web 2.0) is dynamic interactive web site. It interaction between people, software , data and describe a typically combination of technology allowing user to interact with information.

Example of social site

 

4- Web site:

- A collection of related web pages found at a single address AND

- Web site  has unique address (URL) example: www.vietnamwork.com

Web 2.0 application: Google docs, Gmail, Web Conferencing videoconferencing: Webex, GoToMeeting blogging, MP3tunes, Jinzora. Social cataloging (Zotero)

Learning management systems / e-learning

LearnHub

Edu20.org

-  Web Information System (WIS)

use web  as part of communication and paltform

Disseminate information (static or dynamic)

Share information

Conduct transactional business (B2C, C2C, B2B…)

1. DEFINITION:

ISD methodologies is a collection of procedures, techniques, tools and documentation aids which will help the systems developers in their efforts to implement a new information system.

There are many different methodologies used in systems development

A methodology is a collection of:

Procedures

Tools                                                     which will help the systems developers to implement a new information system

Documentation aids

2. PARTICIPANT IN SYSTEMS DEVELOPMENT:

- Project manager.

- Stakeholders ( anyone who involve environment).

- Users.

- System analyst (facilitytater).

- Programmers ( design the program).

- Support personnel.

3. STEPS IN ISD PLANNING:

strategic plans --> develop objective --> identify IS project -->  analyze resources --> set schedule and deadlines --> develop IS

4. TYPES OF ISD METHODHOLOGIES:

a) Game and Sarsors (Stradis)

b) Stages

initial study ( identify the system) -> detail ( get the data from ISD and dentify the data)-> designing alternatives -> physical design ( jobs of programmer to design the systems)

c) Information Engieneer (IE)

d) Prototyping

Determine requirement -> analyze alternative -> specify design->implement design -> user review-> 

e) Structured approach (SDLC)

System investgation -> system analysis -> system design -> system implementation -. system Mainternance and review.

What are IS do?

IS exchange information.

IS easy to control information.

IS improve the product activity.

Function of CBIS:  - Support business operation, processing.

-          Support business decision making.

-          Support competitive advantage.

Type of IS

There are many types of IS. However, IS have 4 main types.

-          Transaction processing system (TPS).

-          Management information system (MIS).

-          Decision support system (DSS).

-          Execute support system (ESS)

-          Expert support system (ES).

-          Other is office support system, knowledge work system,..

Flow of information between MGT levels.

TRANSACTION PROCESSING SYSTEM (TPS)

1.       TPS is CB information system, that capture and process data, recording a business activity.

TPS is the first level of IS.

2.       Features of TPS:

TPS is the input pf business processing. One TPS for each department.

TPS used by operational personnel and supervisory level.

TPS are monitor, collect, store and process data generated fron business transaction.

TPS is the backbone of an organization.

3.       Component of TPS:

ü  People:  user of information system is the person belonging the organasation that owns the transaction.

               Participant are the people who conduct the information processing as they directly enter.

ü  Hardware.

ü  Software
4.  Transaction processing system function:

MANAGEMENT INFORMATION SYSTEM ( MIS)

1     MIS  is an intergrated collection of people, procudures, database and devices that provides managers and decision makers with information to help achieve organizational goals.

             MIS is collection of reports.

2.       Function of MIS:

Ø  To help organization achieve goals.

Ø  Provide right information to the right people at the right time and format.

Input of MIS is TPS ( data and information)

Output of MIS is reports include summary reports, demand reports, period reports.

3.       Features of MIS:

MIS used by middle managerial levels ( manager in department or super organizer.

MIS use internal data stored in computer systems

MIS produce several kinds of reports with fixed and standard formats.

MIS make/ support programmed ( structured) decision.
4. Scenario of MIS

DECISION SUPPORT SYSTEM ( DSS )

1.       DSS is An organized collection of people, procedures, software, database and devices used to support problem – specific decision making.

2.       Features of DSS

Input include internal ( from TPS) and external ( from costumer,..) used to support unstructured problem.

Maily for tactical managers.

Consist of 4 part: user, software, data and decision model ( operation, technical, data model).

EXECUTED SUPPORT SYSTEM (ESS)

1.       ESS designed to support higher level of DM in organization. They help executives and senior managers analyse the environment in which the organization operates, to identify long-term trends, and to plan appropriate courses of action and present summary information designed for top executives.

2.       Characterist of EIS

-          TPS + MIS + DSS

-          Gaindirect access information about company.

-          Used only at the most senior management levels.

-          Use internak and external data sources.

EXPERT SUPPORT SYSTEM (ES)

1.       OVERVIEW:

2.       CHARACTERIST OF ES:

OTHER INFORMATION SYSTEM

Information systems ia a application of computer based IT combination of hardware software, infrastruture and trained personnel used to facilitate, planning, control, coordination, and decision making in an organization.
component of CBis: people, telecommunication, software, hardware, datbase and procedures.
Component of is hardware:
conclude computer equipment.
software: computer program that govern the operation of the computer.
finance software: process payroll, send bills to customers, provide managers with information to increase profit.
Database: is an organized collection of interrelated data.
people: who manage, run, program, maintain  the  systems.
Procedures: