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File Organization IB Computer Science SL Evan Stoner | April 2009

File Organization IB Computer Science SL Evan Stoner | April 2009. 7.1.1 Definition of the Key Field. Used to identify a record Primary key is the unique identifier of a record, e.g. alpha code Can be created by combining data records, e.g. surname + birthday + phone number

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File Organization IB Computer Science SL Evan Stoner | April 2009