Chap 6

Question 1

Bit

Answer 1

Smallest unit of data a computer can handle

Question 2

Byte

Answer 2

Like the plural version of bit. Represents single character letter, character, symbol,

Question 3

Field

Answer 3

Grouping of characters into a word, a group of words, complete number,

Question 4

Record

Answer 4

Group of related fields, student name, number, etc

Question 5

File

Answer 5

Group of records

Question 6

Entity

Answer 6

Person, place, thing, or event which we store info

Question 7

Attribute

Answer 7

Piece is information describing an entity

Question 8

Data redundancy

Answer 8

Duplicate data in multiple data files

Question 9

Data inconsistency

Answer 9

Different values for same attributes when same data are stored in multiple locations

Question 10

Program data dependence

Answer 10

Close relationship between data stored in files and software programs that update and maintain those files. Any changes in data organization requires a change in the programs associated with those files

Question 11

Database

Answer 11

Group of related files

Question 12

Database management systems

Answer 12

Software to create and maintain a database and enable individual business applications to extract the data they need without having to create separate files or data definitions in their computer programs

Question 13

Problems with traditional file environment (5)

Answer 13

Data redundancy 
Program data dependence 
Lack of flexibility 
Poor security
Lack of data security