Databases - continued
• Data structures are not always reliable: – When combining several different databases into one, the methods used to structure the data will impact search results – For example, when a query is done using “ROBERT SMITH,” results returned may or may not include ROBERT A, BOB, BOBBY, and ROBERTO … whether separate queries must be made for each name varies from one database to another • Extraction Technology often applied • Ensure identifiers • Avoid duplicated records • Use as pointer only, “Hits” must be verified
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