Information Technology Flashcards
Data Mining
An analysis of data using tools which look for trends or anomalies without advance knowledge of the meaning of the data
Programmer Responsibilities
(1) Use design developed by analysts to develop an information system
(2) Write computer programs
Computer Operator Responsibilities
(1) Data is properly entered into computer
(2) Data is produced correctly
(3) Needed output is produced
Information Systems Librarians
Maintain company databases, files, and programs in a separate and secure storage are
When Do Librarians Allow Changes Into a Program
Once the change has been tested in the test environment by someone other than the programmer
Optical Character Recognition Software
Converts images of paper documents as read by a scanning device into text document computer files
Logical Access Controls
Prevent systems from infiltration electronically
Stages of Data Processing Cycle
(1) Data input
(2) Data processing
(3) Data storage
(4) Information output
Data Processing Cycle
Describes the operations performed on data in computer-based systems to generate meaningful and relevant data
Soft Copy
Displayed on a monitor
Forms of Information Output
(1) Documents
(2) Reports
(3) Queries
Queries
Requests for a specific piece of information
Responsibilities of Network Managers
(1) Make sure organizations networks operate continuously and properly
(2) Make sure all applicable devices are linked to the organizations internal and external networks
Master File
Permanent document used as an ongoing reference tool
Integrated Test Facility
Develops and integrates test data into the live processing of actual data resulting from business transactions
Transaction Processing System
Completely programmed and automated system treating every problem in exactly the same way
Executive Information System
An information system designed to provide executives with the needed information to make strategic plans, to control and operate the company, to monitor business conditions in general, and to identify business problems and opportunities
Validity Check
Compares inputted data against a list of acceptable entries to make sure it matches the specifications for at least one
Decision Support System
(1) An information processing system providing interactive capabilities, including modeling and database access within a decision-making system
(2) Differs from other information systems in it’s emphasis on synergism between computer and the user
Systems Analysts Responsibilities
(1) Developing company’s information system
(2) Designing computer applications and preparing specifications for computer programming
Assembly Language
Programming language in which each machine language instruction is represented by mnemonic characters
Access Time
The amount of time it takes to retrieve data from memory or storage
COBIT
Control Objectives Information and Related Technology
Online Transaction
(1) Processed with other computers or networks immediately through the internet
(2) Transaction is processed without delay as it is initiated and executed
(3) Input or initiation equipment is in direct and open communication with the CPU of the processing computer system
Access Control Matrix Consists Of
(1) A list of authorized user ID numbers and passwords
(2) A list of all files, data, and programs and the access each user has to them
Modem
Electronic device that allows a computer terminal to send electronic signals via an audio signal over a telephone line
