13722590
Descripción
Mapa Mental por hugo hernandez, actualizado hace más de 1 año
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Creado por hugo hernandez
hace casi 6 años
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The systems life cycle
- Verification
- Definition
- A way of preventing errors when data is input
- A way of preventing errors when data is input
- Ways of
verifaction
- Double
entry
- Data is entered twice
- Data is entered twice
- Visual
check
- The person entering data must check for errors
- The person entering data must check for errors
- Double
entry
- Definition
- Validation
- Definition
- A way to reduce errors
- A way to reduce errors
- Types of validation
- Presence check
- Makes sure that a field is not left blank
- Makes sure that a field is not left blank
- Range check
- Ensure data is in defined range
- Ensure data is in defined range
- Type check
- Ensures correct type of data is entered
- Ensures correct type of data is entered
- Length check
- Format check
- Check digit
- Works with an algorithm
- Works with an algorithm
- Presence check
- Definition
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