Copy and Edit

Keys

Description

AS Level ICT A LEVEL Mind Map on Keys, created by CGreen1997 on 21/01/2014.
CGreen1997
Mind Map by CGreen1997, updated more than 1 year ago
CGreen1997
Created by CGreen1997 almost 11 years ago
11
0
0

Resource summary

Keys
  1. Primary Key
    1. A field in a database used to identify a record e.g. exam number, NI number etc.
    2. Foreign Key
      1. This is how tables link together in a relational database.
        1. A foreign key is a field in a table that is a primary key in a different table.
        Show full summary Hide full summary

        Want to create your own Mind Maps for free with GoConqr? Learn more.

        Similar

        Year 9 Music Topics
        Becca Lyes
        Future Development in ICT
        CGreen1997
        Validation and Verification
        CGreen1997
        computer networks
        Kaci-Marie Neils
        Employment Definitions:
        jamaralea16
        Master Map to copy
        mimi3492
        Computer network
        Phumipat Sookphanich
        Grade 7 Computer Quiz (1)
        allain.recorba
        Spreadsheets
        CGreen1997
        Data, Information and Knowledge
        CGreen1997
        Cell Referencing
        CGreen1997
        Browse Library