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Midterm

ITM 207 Study Guide - Midterm Guide: Xml, Html, Instant Messaging


Department
Information Technology Management
Course Code
ITM 207
Professor
Joseph Lee
Study Guide
Midterm

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Information system
-software that helps the user organize and analyze data
Electronic spreadsheets and database management systems
-Software tools that allow the user to organize, manage and analyze data in various ways.
Spreadsheet
-A software application that allows the user to organize and analyze data using a grid of labelled
cells.
A cell can contain data or a formula that is used to calculate value.
Data stored in a cell can be text, numbers, or “special” data such as dates.
Spreadsheet cells are referenced by their row and column designation.
Circular references.
- A set of formulas that ultimately rely on each other
Spreadsheets are useful because we are able to instal what-if analysis
Data Management Systems
-Database
A structured set of data
- Database management system (DBMS)
A combination of software and data, made up of a physical database, a database engine, and a
database schema
Physical database
A collection of files that contain the data.
Database engine
software that supports access to and modification of the database contents
Database schema
A specification of the logical structure of the data stored in the database
Database query
A request to retrieve data from database.
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