Data Hierarchy & Types

Data Hierarchy

Data is organised in a structured hierarchy from smallest to largest.

Character/Byte → Field → Record → Table/File → Database
        

• Character/Byte - Single letter, number, or symbol
• Field - Single piece of data (e.g., FirstName, Age)
• Record - Collection of related fields (one row)
• Table/File - Collection of related records
• Database - Collection of related tables

Data Types