Computer Science

a collection of attributes for a single entity

an entity is a single object, place, person or thing

properties or characteristics of an entity

a data structure that involves creating data pairings that can be located using a key

used to identify each attribute held in the dictionary

Records and dictionaries

Dictionary challenge

Reading CSV files

Writing to CSV files

Careers in programming

Programming project - dictionaries I

Programming project - dictionaries II

This unit introduces pupils to the new data structures of records and dictionaries. They will develop a Caesar cipher encryption program using a dictionary as a cipher wheel. Pupils will explore how data can be read from and written to files and how this data can be used within a program.

Programming: dictionaries and data files

the process of applying an encryption algorithm to plaintext to produce ciphertext that cannot be understood (without decryption)

when a key (the attribute identifier) is paired with the data

an algorithm used to convert plaintext messages to ciphertext (encryption) or ciphertext to plaintext (decryption)

comma-separated values are a plaintext data file where each value is separated by a single comma

displaying data in a grid of rows and columns

a Python method which removes any leading, and trailing whitespaces or characters that you specify

a Python method which is used to break a string into a list based on a specified delimiter

a dynamic data structure that can contain items of different data types

a sequence of characters, e.g. letters, numbers, spaces, and other symbols

the join method takes a list and joins each value in that list into one string

a file handling mode that allows a program to write extra data at the end of a file without erasing the existing contents of the file

specific, measurable and realistic benchmarks used to determine if a project, task or outcome has been accomplished successfully

a document that you can use when developing a program to keep track of your progress throughout the project

reflecting on what has been done well and what could be improved

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Programming: dictionaries and data files

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