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Ch.2 Data Control and Data Organisation, sb - Coggle Diagram
Ch.2 Data Control and Data Organisation
2.1 Data Hierarchy
File
Record
Database
Field
2.2 Data Control
Data Control
data validation
Fixed value check
Presence check
Type check
Range check
Length check
Format check
user interface designs
Drop-down list
Radio button
Checkboxes
Data picker
data verification
Inputting data twice
Double data entry
Proofreading twice
Garbage in, Garbage out
transcription error
Transposition error
data source error
2.3 Functions of Database
Organization
2.4 File Access Method
sb