The systems life cycle

Description

3º de ESO Tecnología Mind Map on The systems life cycle, created by hugo hernandez on 13/05/2018.
hugo hernandez
Mind Map by hugo hernandez, updated more than 1 year ago
hugo hernandez
Created by hugo hernandez almost 6 years ago
7
0

Resource summary

The systems life cycle
  1. Verification
    1. Definition
      1. A way of preventing errors when data is input
      2. Ways of verifaction
        1. Double entry
          1. Data is entered twice
          2. Visual check
            1. The person entering data must check for errors
        2. Validation
          1. Definition
            1. A way to reduce errors
            2. Types of validation
              1. Presence check
                1. Makes sure that a field is not left blank
                2. Range check
                  1. Ensure data is in defined range
                  2. Type check
                    1. Ensures correct type of data is entered
                    2. Length check
                      1. Format check
                        1. Check digit
                          1. Works with an algorithm
                      Show full summary Hide full summary

                      Similar

                      Test Diagnóstico de Informática Básica
                      victorlobato2009
                      TECNOLOGÍA TAREA
                      Denisse Alcalá P
                      Materiales de construccion
                      Diana Woolfolk
                      INSTRUMENTOS DE MEDIDAS Y SIMBOLOGÍA ELECTRICA - VOLTAJE.
                      Teresa Villa
                      Leyes de Kirchhoff (Voltaje y corriente)
                      dianamardp
                      DISPOSITIVOS DE ALMACENAMIENTO
                      Esteban Bravo3B
                      tema 6 : ELECTRÓNICA
                      alejandrauscola
                      20 preguntas sobre sistemas operativos
                      esmeraldameza100
                      codigos QR
                      Cristina Padilla
                      Curso Basico De Android
                      manrongel
                      Historia de la Ingeniería
                      Camila González