A-level Computing/AQA/Problem Solving, Programming, Data Representation and Practical Exercise/Definitions
Local variable - declared within subroutines or programming blocks, their local scope means they can only be used within the subroutine or program block they were declared in
Global variable - declared at start of program/module, can be used/accessed in every procedure/subroutine
Pixel - The smallest addressable part of a bitmap image
Database - A persistent, structured list of related items, held on a computer and searchable
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Category:Book:A-level Computing#AQA/Problem%20Solving,%20Programming,%20Data%20Representation%20and%20Practical%20Exercise/Definitions%20