A collection of items grouped under a single identifier - Contiguous - Static - Homogenous - Each item is identified by its index (position), starting at - Mutable - 3 dimensions:

2 Dimensional (Arrays)

like a table, index like: [row][column]

3 Dimensional (Arrays)

like a cube, index like: [height] [length] [depth]

all data stored together in memory

structure size cannot change at runtime

only support a single data type

items can be changed/replaced after created

Collection of related fields stored under a single identifier Heterogenous All attributes must be defined before use, with each field being given a data type before use

1. Define the structure and fields (names + data types) 2. Declare variables to go in it (the row headings) 3. Assign data

can store more than one data type

Like arrays, but: - Heterogeneous - Not contiguous - Dynamic

the size of the structure can change at runtime

(not necessarily 2 items) Like arrays, but: - Immutable - Heterogeneous Useful for data that isn't changed but accessed by index Use () in python Can include lists inside as elements

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1.4.2 (a)

1.4.2

Question	Answer
Arrays	A collection of items grouped under a single identifier - Contiguous - Static - Homogenous - Each item is identified by its index (position), starting at - Mutable - 3 dimensions:
1 Dimensional (Arrays)	like a list, index like: [ ]
2 Dimensional (Arrays)	like a table, index like: [row][column]
3 Dimensional (Arrays)	like a cube, index like: [height] [length] [depth]
Contiguous	all data stored together in memory
Static	structure size cannot change at runtime
Homogenous	only support a single data type
Mutable	items can be changed/replaced after created
Records	Collection of related fields stored under a single identifier Heterogenous All attributes must be defined before use, with each field being given a data type before use
Setting up a record	1. Define the structure and fields (names + data types) 2. Declare variables to go in it (the row headings) 3. Assign data
Heterogenous	can store more than one data type
Lists	Like arrays, but: - Heterogeneous - Not contiguous - Dynamic
Dynamic	the size of the structure can change at runtime
Tuples	(not necessarily 2 items) Like arrays, but: - Immutable - Heterogeneous Useful for data that isn't changed but accessed by index Use () in python Can include lists inside as elements
Immutable	data cannot be modified

Created by: FlashCardFun!

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