📊💾: A data backup refers to the process of creating a copy or duplicate of digital information, such as files, documents, or databases, and storing it on a separate storage medium, typically a disk (💾). This practice ensures that important data is preserved and can be recovered in the event of data loss, hardware failure, or other unforeseen circumstances. Data backups are crucial for data protection and disaster recovery, providing a safeguard against potential data breaches, accidental deletions, or system failures.