WEB APPLICATIONS

Hi asalamualaikum, below is the last topic of this second trimester which is about “WEB APPLICATION”. I would like to thank ALLAH for giving me the health throughout the whole of this trimester. Enabling me to complete it with understanding with the help of my beautiful lecturer Miss Nisha. God bless for your time and devotion you gave to us. THANK YOU.

WEB APPLICATION: It refers to any application, services in internet and it examples are Google document, Windows Live Hotmail, Turbo Tax online......and so on. As we learnt in Internet Web browsers are software application that allow users to retrieve data and interact with content located on web pages within a website and it examples are internet Explorer, Netscape. Mozilla Firefox, Safari, Opera mini...

Web applications are commonly used as combination of Script and Client and Server. If they are together then that becomes Web application.

Web pages and types of Web: Web document and HTML (Hypertext Markup Language) are Web page.

Static web and Dynamic web page are types of page. In the internet treated about HTML and I would talking about is

 Static is a read only web which allows users to search for information and read it... Example. Web 1.0

Dynamic Web is a web for interaction between people, software. Example: web 2.0 and 3.0.

GENERATION OF WEB: It is information displayed on web page as static content, closed external editing(users are not allow to contribute).It has hyper-linking of the web-pages and bookmarking were two of the most important aspect of web 1.0 and it is in the html coding examples information website, educational web, company website.

GENERATION Of WEB 2: Web 2.0 is the popular term for advances internet technology and applications which allows user to interact with information. It allows users to edit his information on blog, post, comment and share individual information. Examples of the software use are adobe reader, oracle java, window media....etc.

GENERATION OF WEB 3: Web 3.0 is about semantic web, based on intelligent web application using Machine-based learning and reasoning

          Intelligent applications   example DSS, ESP.

Web 2,0 site has two categories online social network and mash ups and aggregation .We all know social network allow people to meet and communicate

 

With each other in the form politics, games and so on.

Aggregation as we all know sum of all things. Which means?

Is a web site that mix different content from other web sites to

Create a new kind of content. Examples include

Data, video, social, search, news aggregators.

Information technologies and applications.

XML and AJAX are the examples of programming language used in Web application.

Programming language is a set of words. Abbreviations and symbols that enables programmer to

Communicate the instructions to a computer.

 The programmer is divided into two parts

Low level language (machine language-1 generation PL and assembly language-2 generation PL))

High level language (there are first, second, third generation PL)

It is binary number that is 0 and 1 or combination numbers and letters that represent binary digits.

Third languages as we all know are the first to use true English-like phrasing, making easier to use than the previous languages. It is also known as Procedural languages and they are

FORTAN C

COBOL C++

BASIC

Pascal AchiveX

Fourth generation is non-procedural languages. It uses graphical tools and the language are

Visual Basic

Visual Age

Fifth generation is Object-oriented and Web development tools. Examples: Prolog. AJAX, JAVA Sprit. It functions were explained in notes which I understood very well.

 

XML: External Markup language (Markup language for Web Documents (2.0) which includes words and pictures (chapter hard ware, topic input device) html hardware and input device.

 Under the Web 2.0 we have Tagged, Blog, Wiki....

RSS 2.0 and broadcasting and video casting are all under Web 2.0 IT

Google Application: series of application from Google Messaging, Calendaring, Documents, Video, Sites, Talk

And maps and all of it function were stated and I understood them very well.

INTERNET

INTERNET

It is the largest network in the world that connects people all over the world. With this it connect business partners, supplier, customers and all departments. As we all know we use internet to access information or find general information like

Send or receive files between computers

Share resources

To correspond/ meet with people

Shop for product and services

History shows that internet was formally called

ARPANET when it was invented in 1969 and the name was changed to INTERNET in 1980.

Services on the internet are EMAIL. It is electronic mail allowed message to be exchanged from computer to computer. Email program which is used to create, send, receive, forward,

Store, print and delete email. Examples

Yahoo, Gmail, MSN and Hotmail.

WEB: It was created by Tim Berneve Lee and it

Contains hypertext links or highlighted keywords and images that lead to related information. WEBSITE: Collection of documents and webpage is document. Web has hypertext

Markup language for displaying webpages and other information that can be displayed in a web browser.

Before one can access the web there must be

Internet connection

Internet services Provider

Browser  to access the web.        

 ISP is commercial organization that sells temporary 

  To subscribers. Examples MTN, Digi, Maxis, Microsoft network......and so on

Web Browser is software program that are used to view web page. Example-Firefox, Opera, Safari, Internet explorer.......and so on

Web Servers are computers delivers web pages and every web servers has an IP address and possibly a domain name.

Web Client is your computer

TRANSFER PROTOCOL

The transfer protocol is the set of rules or software that the computer use to move files from one computer to another on the internet. It has Hypertext Transfer Protocol(HTTP) which is common transfer protocol used on the internet and it also uses FTP.

Web Browser works by using the Hypertext transfer protocol to request a special encoded text document from the server

DATABASE MANAGEMENT

DATABASE MANAGEMENT

Database is a place to store a data in a system and database management system is a software collection of data that is arranged, organized and store in alphabetical order.

Functions of the database are

1. to store

2. Organizes

3. Control

The examples of places where database applications are used include hospitals, banks, company and business. The component of database is Data item is a field in a data processing and it is a piece of information and Schema describes the organization of data and the relationship within the database.

For one to create the data you must relate the database management with ERD. ERD is an entity while field is a column of a table.

We learnt all the fundamentals of database from field, record, key field, table, relational database and objective.

DBMS (Database management system)is a software package for manipulating databases and examples like , clippers......etc.

In the DBMS we have Data definition language

Data manipulation language and structure querying language. We learnt all it’s functions.

There are three types of DBL and they are

DDL (data definition language)

DML (data manipulation language)

DCL (data control language)....all it examples were given.

I would like to talk about DBMS users they are

End users, application programmers and Database administration. Database Models also are structure, characteristic, description and organization.   The basic data for building block for all data models are Entity, Attribute and Relationship. We learnt all it function and the relationship has three types that is

One to one (relationship between one entity to one entity)

One to many (relationship between one entity to many entity)

Many to many (relationship between many entity to many entity) and all its examples were given.

We have three types of database models

 

Hierarchical database

Network database

Relational database

Object-relational database

The fellow week we had a test in which my performance was good.

THANK YOU.

INFORMATION SYSTEM/ INFORMATION SYSTEM DEVELOPMENT

Hello guys,

Welcome to week 4 on the topic Information system, before we started the new topic, we recapped what we have learnt on ICT and IT.We discussed what is System and information system. System is a set of elements or components.it has Input, Processor, Output as the organization while IS made of Customer, Supplier and Stockholder. Information system on the other hand is the combination of hardware. Software, infrastructure, trained personnel and information technology used to facilitate planning, control, coordination and making decision in an organization. It has people, information and business as it organization.

INFORMATION SYSTEM: It is application of computer based information technology which is the combination of

Hardware, software, infrastructure, and trained personnel. We also learnt about types of information system which is TPS, DSS, ESS, MIS, and OAS.

Transaction processing system, Decision support system, management information system and office automation system. They are all information system used in most of organization in the world. The information system can be divided into two parts that are supporting business operation and support management DM.

The flow of information between management levels. The top manger make use of ESS (Expert support system) in their department to initiate things in organization in the form strategic, The middle manager make use of DSS and MIS(Decision support system and Management information system) in their department. The middle manager gets the information from TPS in order for them to make any decision. Low level also make use of TPS (Transaction processing system) is the first place where information is been generate for the effective run of the business.

We also learnt about TPS features, component, and it processing stage) as we all know TPS is connected to all levels of the company. MIS function, features, and it processing stage. The last DSS with it function, features. It helps me to have knowledge of all the information system that I mentioned above.

The last session of the day was ESS (Executive support system).It was designed to support high level of DM in an organization and it characteristics. ES(Expert system) is part of general categories of computer that fall under artificial intelligence which allow the computer to think,capture,store,and also allow it to make suggestion.

During that week we did group work which falls under information system. In the tutorial class we learnt how to references using the Microsoft word. This is some of what we did. 

   Interpersonal Communication. (2012, February 26). Retrieved March 14, 2013, from Wikipedia: http://en.wikipedia.org/wiki/Interpersonal_communication

Anderson, W. A. (1999). Sociology 2000. Boston: Boston.

Cole, A. (2012, April 11). The Changing Face of Information Technology. Retrieved March 14, 2013, from it business edge: http://www.itbusinessedge.com/cm/community/features/articles/blog/the-changing-face-of-information-technology/?cs=50198

Gower, C. (1999). Direction in conservation biology. Journal of animal ecology, 215-244.

Ismail, R. (2005, October). Desktop Publishing in Information Marketing. PC Magazines, pp. 21-23.

Jackson, M. (2011, June 21). Fattening Queer History: Where Does Fat History goes from here. (M. Jacob, Interviewer)

Man, E. V. (2000). Computer Viruses. New Jersey: Prentice Hall.

Sakiam, S. (2009, April 1-15). Living up to its names. Times, pp. 21-23.

INFORMATION SYSTEM DEVELOPMENT: It is the process of defining, designing, testing, and implementing a new software application or program. Apart from the ISD, we have ISDM which is the collection of procedure, techniques, tools and documentation aids which will help the system developers in their efforts to implement a new information system.

A Methodology is used to make the analysis and design process more accessible to non- expertsIt also introduce structure into design and make it more manageable.

There reason we initiate system Development is

When their existing problem with the system

Desire to introduce new system

Change in marketing or external environment

Merger or acquisition

We have participant in in the system development and system analyses, which consist of users, IT specialist, programmer, Manager, Stakeholders, external companies.

 

                Types of information system development Methodology

Gane sarsons (Stradis), prototyping/Iterative approach, structure approach (SDLC), information engineering(IE),soft system methodology, and ethics.