Can it happen that the data stored in databases include identical records? Yes, it happens frequently. However, having duplicate records in databases is a scenario that should be avoided. Duplicates pose an ongoing risk to the data consistency and the overall database efficiency. Database administrators (DBAs) spend a significant portion of their time identifying and removing these duplicates.
This article will explore the issue of duplicate records, including their origins, the effects they have on databases, and strategies for swiftly detecting and permanently removing duplicates.