When combining datasets from different sources
Posted: Sat May 24, 2025 9:39 am
Mergers and Acquisitions: such as during company mergers, there's a high probability of overlapping information, leading to duplicate customer IDs, product codes, or financial transactions.
Data Collection Methods: Certain data collection methodologies sri lanka phone number list can inherently generate duplicates. For example, if a survey allows multiple submissions from the same individual, or if sensor readings are intermittently re-sent, duplicates will naturally occur.
Lack of Unique Identifiers: In the absence of a robust primary key or unique identifier field, systems may struggle to differentiate between distinct entities, leading to the creation of duplicate records based on non-unique attributes.3
Intentional Duplication (Rare but Possible): In some niche scenarios, duplicates might be intentionally introduced for testing purposes or to represent multiple instances of the same item (e.g., tracking individual units of a product with the same serial number, though this usually involves additional differentiating attributes).
Understanding the origin of duplicates is crucial for implementing preventative measures and developing effective remediation strategies.
Data Collection Methods: Certain data collection methodologies sri lanka phone number list can inherently generate duplicates. For example, if a survey allows multiple submissions from the same individual, or if sensor readings are intermittently re-sent, duplicates will naturally occur.
Lack of Unique Identifiers: In the absence of a robust primary key or unique identifier field, systems may struggle to differentiate between distinct entities, leading to the creation of duplicate records based on non-unique attributes.3
Intentional Duplication (Rare but Possible): In some niche scenarios, duplicates might be intentionally introduced for testing purposes or to represent multiple instances of the same item (e.g., tracking individual units of a product with the same serial number, though this usually involves additional differentiating attributes).
Understanding the origin of duplicates is crucial for implementing preventative measures and developing effective remediation strategies.