Lecture 2 Enterprise Information Infrastructure EII Objectives n

Lecture 2 Enterprise Information Infrastructure (EII)

Objectives n What is an information system? n System architecture n Three different application scopes n Detailed components of IT n Overview of the following lectures

Business Strategy vs. Information Strategy n To achieve what we want from our business: – Which information technology and/or information systems we use – How information technology and/or information systems are used are important for the success of our business

Information Systems (IS) n Organized combination of various parts of information technology (IT) including: – – – n People Hardware Software Communications networks Data resources That collects, transforms, and disseminates information in an organization

System Architecture is the relationship among various components of IT in your company that permit the planning and integration of Information Strategy with Business Strategy – How various components of IT are put together and related to each other – How well various components of IT work together

Application Scopes IS used for business computing in a company can be categorized into three segments (based on application scope): n End-user computing: standard office personal computing software n Enterprise computing: control and optimization of business processes throughout the company n Inter-organization computing: connection of computers across companies to share information

Components of EII n Detailed components of IT in an enterprise: – – – Telecommunications Computer Networks Internet Computing Communication Application Systems

Telecommunications n Wired & Wireless telephone systems, Radio, Satellite, etc. n Transmitting information in various forms – voice, digital data, graphics, video, etc. n Creating information utility (store, retrieve, process) characterized by: – on-line, real-time functionality – numerous subscribers at remote locations

Computer Networks n Interconnected computer devices that work together and share information with each other, for example: – Local Area Network (LAN) – Metropolitan Area Network (MAN) – Wide Area Network (WAN) – Global Area Network (GAN) – Value-Added Network (VAN)

Internet n Tools and path to connect to global network – Internet technology – Internet economy – E-commerce – Dot-com

Computing n Computer and Peripheral devices: desktop computer, notebook, hand-held computer, printer, scanner, etc. n Operating Systems: manage the execution of application programs and data flow among hardware devices – Windows XP, Windows 2000, Unix, etc.

Computing Programming Languages: instruction to carry out the execution of application – C++, Visual Basic, Java n Data Management: system to store, retrieve, and manage data used in business – Oracle, Access, MS SQL n Development Tools: software used to develop other application software – MS Front. Page, Dreamweaver, Visible Analyst n

Communication n n Systems that support effective business communication and collaboration Voice mail (answering machine) E-mail Fax Conferencing, E-Meeting, Brainstorming systems Bulletin Board: non-interactive conferencing system for posting information and comments

Communication n Groupware: allowing shared electronic documents, calendars, scheduling n Teleconferencing: live conversations – voice and full motion video n Telecommuting: work arrangement n EDI: sending electronic business documents from one computer system to others among business partners

Application Systems n Application systems in business – Functional business systems – Cross-functional business systems

Components of EII n n n Telecommunications: Lecture 4 Computer Networks: Lecture 4 Internet: Lecture 3 Computing: Lecture 5 Communication: Lecture 2 Application Systems: Lecture 6 & 7