Data deduplication techniques identify and merge or remove duplicate records that represent the same real-world entity — typically a customer, but also products, suppliers, or other master data — under different spellings, formats, or partial information across systems. Getting this right is foundational to clean customer records, since duplicates don’t just waste storage; they distort […]

Data quality rules are the specific, testable checks that turn an abstract quality standard into something a system can actually enforce — “email addresses must match a valid format,” “order dates cannot be in the future,” “customer ID must be unique.” Without rules this concrete, “data should be accurate” is a sentiment, not something that […]

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