XML schema

Imagine you are playing with your Lego blocks, and you want to build a special kind of house. However, you don't know what kind of blocks you need for each specific part of the house.

An XML schema is like an instruction manual for building a particular type of Lego house. It tells you which blocks you need for each part of the house, and where each block should go.

Just like how the instruction manual makes it easier for you to build your Lego house, XML schema makes it easier for software programs to understand how to read, exchange, and work with XML files. It helps ensure that everyone working with XML files is using the same "instruction manual" and following the same rules.