chapter 10-12 tik xii science. database management

Chapter 10-12

TIKXII Science

DATABASE MANAGEMENT

Database, Data, and Information

Database•Collection of data organized in a manner that allows access, retrieval, and use of that data

Data•Collection of unprocessed items•Text•Numbers•Images•Audio•Video

Information•Processed data•Documents•Audio•Images Video

Garbage In, Garbage Out

Database

Old vs New

File processing system

•Each department has its own set of files•Used for many years•Have data redundancy•Isolate data

Database approach

•Programs and users share data•Reduce data redundancy•Improve data integrity•Share data•Allows easier access•Reduces development time•Can be more vulnerable

DBMS

• Structured Query Language (SQL)• Form• Report Generator• Relational Database• Data Warehouse

COMPUTER SECURITY AND SAFETY, ETHICS, AND PRIVACY

Network Attacks

Computer Virus

•Affects a computer negatively by altering the way the computer works

Worm•Copies itself repeatedly, using up resources and possibly shutting down the computer or network

Trojan Horse

•A malicious program that hides within or looks like a legitimate program

Rootkit•Program that hides in a computer and allows someone from a remote location to take full control

Terms

• Denial of Service Attack• Back Door• Spoofing• Firewall• Honeypot• Captcha• Digital Forensics• Spam

Software Theft

Steals software media

Intentionally erases

programs

Illegally copies a program

Illegally registers and/or activates

a program

Health Concerns of Computer Use

Health Concerns of Computer Use

• Computer addiction occurs when the computer consumes someone’s entire social life

• Symptoms of users include:

Craves computer time

Overjoy when at the

computer

Unable to stop computer

activity

Irritable when not at the computer

INFORMATION SYSTEM DEVELOPMENT

fin