Learn: Metadata - What It Is and Why It’s Stored

Welcome!You've already learned how computers store data, including images, sounds and text. Today, we’ll explore metadata, which helps computers store and organise files effectively. Let’s dive in!

What is Metadata?Metadata is data about data. It describes information about a file, such as its size, format, or when it was created. Metadata is important because it helps the computer understand and manage files efficiently.

Why is Metadata Stored?Metadata is stored to help computers organise, retrieve, and display files correctly. For example, metadata for an image might include its dimensions and colour depth, which ensures it appears correctly on screen. Without metadata, files would be harder to manage and use.

Examples of MetadataCommon examples of metadata include:File size: How large the file is.File type: Whether it’s an image, sound or text file.Date created: When the file was made.Author: Who created the file.Metadata may also include technical details, like resolution for an image or bit depth for sound.

How Metadata Helps File ManagementMetadata makes file organisation easier. For example:Searching: Metadata allows users to search files by name, type or date.Sorting: Files can be sorted by size, creation date or other attributes.Displaying: Metadata ensures files open with the correct software or settings.

Review Time!Well done! You’ve learned about metadata, its purpose, and examples of what it includes. Let’s review with some final questions to check your understanding.