Activity : Files, Records, Fields
In a hospital, a file of patients details is stored on a computer. 
Part of this file is shown here :

 

PatientID Name Illness Doctor WardID DOB
65349 Tom Jenkins Mumps Dr. Thomas W1 16/11/94
65350 Ann Crombie Asthma Dr. Jones W3 03/06/84
65352 David Walsh Hip fracture Dr. Thomas W1 21/04/51
65353 Jenny Smith Asthma Dr. Thomas W5 19/07/86
65356 Jack Spratt Jaundice Dr. Bradley W2 09/01/73

Select the correct answers for the questions below...

How many records are displayed?
How many fields are displayed?
Which field is the primary key field?
A new record of data is added to this file if...
The data in an existing record may be changed if...

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