Can you explain what is meant by the term 'snapshot' in the context of systems or databases?

In the context of systems or databases, the term "snapshot" refers to an exact copy of the data state at a specific point in time.

This can be:

• A database snapshot, capturing all data and their state at the moment of creation, allowing data recovery or analysis without influence from current changes.
• In version control systems — a saved state of files or a project.
• In Flutter, for example, a snapshot is often used in asynchronous operations (FutureBuilder, StreamBuilder) to represent the current state of data (loading, error, data).

Snapshots are useful for backup, recovery, testing, and ensuring data consistency.