| Terms |
Definitions |
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cum
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when
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Top Level Domain
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educomcaorgnet
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meteor-
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lofty, high, in air
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Every attribute value is
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atomic
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maintenance
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Changes in hardware, software, documentation, or procedures to a production system to correct errors, meet new requirements, or improve processing efficiency.
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Effectiveness
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What term describes the \"degree to which a goal is met\"?
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Five-Forces Model
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-bargaining threat of customers
-threat of substitutions
-bargaining power of suppliers
-threat of new entrants
-rivalry among existing firms
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A powerful restraint on change
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Organizational culture
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Outsourcing
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Hiring another company to provide outside support for all or part of project
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tactic knowledge
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expertise and experience of organizational members that has not been formally documented
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MP3
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music format for the internet; abbreviation for motion picture experts group audio layer 3
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Ethical Issues With Technology
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Intellectual property
Copyright
Fair use doctrine
Pirated software
Counterfeit software
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Support activities
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firm infrastructure, human resources, technology development, procurement
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electronic payment systems
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computer-based systems that allow customers to pay for goods and services electronically, rather than writing a check or using cash
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Communications satellites
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Orbiting devices that provide multiple communication channels over a large geographical area.
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Groupware
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software that enables people to work together more effectively
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hard disk
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Magnetic disk resembling a metallic platter; used in large computer systems and in most PCs.
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Data type
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specifies kind of data field contains
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VBR
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variable bit ratedepends on what is being recorded
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shopping bot
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software with varying levels of built-in intelligence to help electronic commerce shoppers locate and about which products or services that might wish to purchase
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Executive Summary
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occupies one page summaries
key facts, issues, and conclusions
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Query
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a request for data from a database
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Software programs that ease the systems development process by providing graphical tools that systems analysts can use to develop diagrams
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CASE tools
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Supply Chain
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-Firms, their suppliers, and their suppliers’ suppliers, and relationships and processes involved among them
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computer virus
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one of the most destructive examples of computer crime. it is a program code that cannot work without being inserted into another program
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Market Based Analysis
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A data-mining system which computes correlations of items on past orders to determine items that are frequently purchased together
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Content management software/system
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Controls large amounts of text, graphics, media files
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Nonprocedural Access
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Language and graphical tools to access data without complicated coding
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feasibility study
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as part of the systems analysis process, the way to determine whether the solution is achievable, given the organization's resources and constraints
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What is information
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Information is knowledge derived from data or date presented in a meaningful context or proccesed information Data___Processes____Information___Knowledge
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What is software that is manufactured to look like the real thing and sold as such?
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Counterfeit software
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Knowledge society
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refers to society in which knowledge is the primary production resource instead of capital and labor.
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a network that links systems between countries
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international network
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A company installs a new system alongside its old system
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Parallel Conversion
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Private Industrial Networks
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-Bring together small number of strategic business partner firms that collaborate to develop highly efficient supply chains
-Relationship-based
-Support many-to-one and many-to-few relationships
-Largest form of B2B e-commerce
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IS operations management
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concerned with the use of hardware, software, network, and personnel resources in teh corporate or business unit data centers of an organization
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Domain Name System
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converts IP addresses to to domain names
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Management information systems (MIS)
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the function that plans, for, develops, implements, and maintains IT hardware, software, and applications that people use to support the goals of an organization
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joint application design (JAD)
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process to accelerate the generation of information requirements by having end users and information systems specialists work together in intensive interactive design sessions
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instruction time
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the time it takes to perform the fetch-instruction and decode-instruction steps of the instruction phase
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Group Consensus Approach
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A decision making approach that forces members in the group to reach a unanimous decision.
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Rotational Delay
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Time required for a disk to rotate into the position needed to access required data
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Offline Devices
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Separate from and not under control of the CPU
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an effective approach for designing a database starts with creating a conceptual blueprint of a database that is also known as a:
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entity relationship diagram
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Systems Development Life Cycle
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1) Systems Definition - Define system goals and scope, assess feasibility, form project team, plan project2) Requirements Analysis - Conduct interviews, evaluate current system, ID new application functions, security, create data model3) Component Design - Determine hardware specifications, design DB, procedures, create job definitions4) Implementation - Build system components, conduct unit test, integrate components, conduct test, convert to new system5) System Maintenance - Record requests for change, prioritize requests, fix failures
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Founders wanted:
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1. data to be available in real time2. entire organization to be on one system3. users to work on a computer screen, not with paper
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relationships among records
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values in one table may relate to rows/records in other tables
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Web space
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a storage area where you keep your Web site.
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Business Requirements
Choosing an ERP System – Selection Factors
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Business Requirements refers to the system’s capabilities and how they meet organizational needs through the use of software modules or groups of business functionality (what do you need?)
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Operational Data and Issues
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-Dirty data- data that is simply wrong ex. Costumer age- 213; value is B for customers gender-Missing Values-Inconsistent data- particularly common in data collected over time. Ex. Time zones give inconsistent times for orders unless date is adjusted to customers time zone.-Data not integrated- records of data are compiled using different software so to view them side by side they must be integrated-Wrong granularity--Coarse data- highly summarized-Fine data- express precise detail-Generally it’s better to have too fine a granularity than too coarse, because it can be made from fine to coarse but not vice versa.-Too much data -Too many attributes -Too many data points-Curse of dimensionality- the more attributes there are, the easier it is to build a model that fits the sample data but is worthless as a predictor.
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How do Projects differ from operations
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projects end when their objectives have been reached or the project has been terminated, operations are ongoing
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Economic order quantity (EOQ)
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the optimal quantity of a specific raw material that allows a company to minimize overstocking and save cost, without risking understocking and missing production deadlines
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In the video case “Get Shorty,” COPLINK assisted the law enforcement officers in solving the crime by allowing the officers to:
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All (A,B,C, and D) of the above
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What is multiplexing, in the context of telephone calls in leased lines?
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multiple voice circuits are mixed together on the same line
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What does 654 mean
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6 is for admins (rwx = 110; cannot execute); 5 is for group (rwx = 101; cannot save); 4 is for anyone (rwx = 100; cannot save or execute)
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List common fractional T1 speeds...
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128 kbps, 256 kbps, 384 kbps , 512 kbps or 786 kbps
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When a customer signal arrive on the access line to the end office switch, does the codec perform ADC or DAC?
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ADC or analog to digital conversion happens (also called coding)
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In what two ways does 802.11n increase throughput?
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using more than 1 antenna and more than 1 radio signal throughput is increased
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