Data Type and Data Structures

Integer and Real

Character and Integer

Real and Character

String and Character

Data that can have up to two values

Data that can only have two values

Data that allows us to store more than one item of data

Data used store characters, digits and punctuation symbols

Variable: TotalPrice (The cost of the tickets booked by the customer)

Variable: SeatNumber (For example F7, meaning the seat is in row F, number 7)

Variable: SeatAvailable (Whether a seat can be booked)

Variable: NoTickets (The number of tickets wanted)

Files in which records are stored in the order in which they were entered

Files in which records have been placed in the file according to some math­ematical hash algorithm

Files in which records are stored according to some key field

Files in which records are stored according to some key field and where one or more indexes have been created to make searching even more efficient

24

42

18

8

Name of array

Data type of contents

Dimensions

Maximum number of elements/size of array/bounds of array

Length of array

Number of values

Variable types

Location of array

Code is easier to manage

Can use iteration

Code will be more easily scaleable

Code will be more accurate

Can use more variables

Allow individual data items to be accessed

Stores a series of similar data items together under one identifier

Stores several different related data items under one identifier

Stores a series of similar data items together under multiple identifiers

Stores several different related data items under multiple identifiers

Whole numbers

Numbers that may have a decimal point

The position of each item of the array

The position of each item of the record

The position of each variable of the array

The position of each variable of the record