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Ch.2 Data Control and Data Organization - Coggle Diagram
Ch.2 Data Control and Data Organization
2.1 Data Hierarchy
File(Table)
Record
Database
Field
2.2 Data Control
Data Control
Data validation
Data verification
Garbage in, garbage out
Transcription error
Transposition error
Data source error
Data Validation
Fixed value check
Radio button
Checkboxes
Drop-down list
Type check
Data picker
Presence check
Range check
Length check
Format check
2.3 Functions of database
Storage
Structures Query Language
Graphical User Interface
Organisation
CLASS
SEX
NAME
SID
CNO
Retrieval
Structured Query Language
Graphical User Interface
2.4 File Access Method
Sequential access
Magnetic
Direct Access
Hard disk
USB Flash drive