AQA Paper 2 - Fundamentals of databases 0.0 / 5 ? ComputingDatabasesA2/A-levelAQA Created by: The_Pimp_DaddyCreated on: 09-09-22 11:17 What is an attribute? A changeable property 1 of 5 What is a primary key? A key that is unique for each record 2 of 5 What is a composite primary key? A key that uses two or more fields from a table to make a unique value 3 of 5 What is a foreign key? A column in a table that connects to another table's primary key 4 of 5 Why are databases normalised? +To reduce redundancy (duplicate data) and to ensure only relevant data is stored in each table +Prevents any issues to do with database modifications 5 of 5
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