Databases - Example A data table (tblDoctors) stores information about doctors working in a surgery Field Data type doctorID Text doctorName doctorGender.

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Presentation transcript:

Databases - Example A data table (tblDoctors) stores information about doctors working in a surgery Field Data type doctorID Text doctorName doctorGender Rules: R1: No two doctors share the same ID R2: Gender is either M or F doctorID doctorName doctorGender d1 Avery M d2 Grimshaw F

Databases - Example Field Data type doctorID Text doctorName doctorGender Rules: R1: No two doctors share the same ID R2: Gender is either M or F doctorID doctorName doctorGender d1 Avery M d2 Grimshaw F Name the three fields in the data table Write down the details of one record that already exists in the database Identify the primary key used in the data table Which one of the following records would be valid: (d5,Bagshaw,don’t know) (d4,Squirrell,F) (d2,Who,M)