GCSE CS Data Key Terms 11-20

Any information or data that goes into a system.”

• Program Process

• Program Inputs

• Program Outputs

• Program Storage

An operation carried out by a computer system. It takes in the inputs and produces outputs.

• Program Process

• Program Input

• Program Output

• Program Storage

Any information or data that leaves a system.

• Program Processing

• Program Output

• Program Input

• Program Storage

A value that can change depending on conditions or information passed to the program

• Records

• Strings

• Constants

• Variables

A value that cannot be altered by the program during normal execution

• Constants

• Strings

• Variables

• Arrays

Any data structure that only requires a single index value to reference any item

• One-dimensional data structures

• Pseudocode

• Two-dimensional data structures

• Algorithm

Any data structure that requires a pair of index values to reference any item.

• Pseudocode

• One-dimensional data structures

• Two-dimensional data structures

• Algorithm

A sequence of alphanumeric characters and or symbols – e.g., a word or sentence

• Flowchart

• Strings

• List

• Selection

A data structure that consists of a collection of elements, typically in fixed number and sequence and indexed by names. The elements of records may also be called fields

• Records

• Lists

• Sequence

• Selection

A set of data items of the same type grouped using a single identifier. Each of the data items is addressed by the variable name and a subscript

• Lists

• Arrays

• Records

• Selection