Duplikatdata
Duplikatdata refers to records that are identical or substantially similar and exist more than once within a dataset or across data systems. Duplicates commonly arise during data integration from multiple sources, data migrations, batch imports, or manual entry where the same entity is recorded multiple times with slight variations. Duplicates can occur for customers, products, transactions, or attributes and may persist across databases, data warehouses, and operational systems.
The presence of duplicate data can distort analytics and reporting by inflating counts, skewing averages, and
Detection and remediation often rely on deduplication techniques. Exact matching uses stable keys to identify identical
Prevention strategies include establishing unique identifiers, enforcing standard data formats, validation rules at entry, and deduplication