Databases - CS 2 0.0 / 5 ? ComputingDatabasesGCSEOCR Created by: niamh668899Created on: 13-05-15 09:51 Length Check (e.g. password must be long enough to be strong.) Must have certain number of characters or be above or below some limit. 1 of 7 Type Check (e.g. No numerals allowed in surname.) Must be a certain data type such as character or number. 2 of 7 Range Check (e.g. Date of birth for a job applicant.) Must fall between certain limits. 3 of 7 Presence Check (e.g.Surname when applying for job.) Must be filled in. 4 of 7 Lookup Check (e.g. Check that a password is correct.) Must match what is held on file. 5 of 7 Format Check (e.g. Car registration number must be LLNNLLL (L-letter and N-number)) Must conform to a certain pattern 6 of 7 Check Digit (e.g. ISBN (International Book Number)) Must be exactly the same data previously entered. 7 of 7
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