Database

Description

Key Words used in Databse theory
James Louden
Mind Map by James Louden, updated more than 1 year ago
James Louden
Created by James Louden about 10 years ago
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Resource summary

Database
  1. File
    1. Organise Records
    2. Record
      1. Group of Fields
      2. Fields
        1. Text
          1. Numbers
            1. Calculated
              1. Date/Time
                1. Graphic
                2. Flat
                  1. 1 table
                  2. Relational
                    1. Linked tables
                      1. Keys
                        1. Primary
                          1. Unique
                            1. Must have
                            2. Foreign
                              1. links tables relationships
                            3. Avoid Data Duplication
                            4. Search
                              1. Complex
                                1. >1 field
                                2. Simple
                                3. Sort
                                  1. Complex
                                    1. >1 field
                                  2. Validation
                                    1. Presence Check
                                      1. field not blank
                                      2. Restricted Check
                                        1. dropdown box
                                        2. Field length
                                          1. size of field
                                          2. Field Range
                                            1. range of numbers
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