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  1. #1
    greek49 is offline Novice
    Windows 7 64bit Access 2010 32bit
    Join Date
    May 2013
    Posts
    1

    Design and Primary Key Help Needed


    Hello,
    I am a beginner to databases and I would like to learn how to use Microsoft Office Access 2010. My preferred approach is to just dive in, so here we go. I have an awful lot of questions.
    Are the primary keys meant to be cumulative, as in the example in the attachment, or is it better to have a different approach to primary keys? In what kind of design situation would you use Autonumber ID's? Could I have a design with a table which uses a PagesID which would contain every single page of every single report in my example and/or a table with an EntriesID to contain every single entry of every single page of every single report? Both of those could be primary keys.
    Sorry to be such a newbie but your help would be appreciated, thanks.
    Attached Thumbnails Attached Thumbnails Beginners ERD.PNG  
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  2. #2
    rzw0wr is offline I will always be a newbie
    Windows 7 64bit Access 2010 32bit
    Join Date
    May 2013
    Location
    Indiana
    Posts
    479
    Start you trek by googling Normalization. Then relational databases.

    PK are what identify the items in the table. Reference and relationships.

    In about every, well always, I use autonumbering for my PK.

    Most of what you are asking is easily found on the internet.

    Dale

  3. #3
    orange's Avatar
    orange is offline Moderator
    Windows XP Access 2003
    Join Date
    Sep 2009
    Location
    Ottawa, Ontario, Canada; West Palm Beach FL
    Posts
    16,850
    Here are some links that may be helpful to you.
    Database Design Principles http://forums.aspfree.com/attachment...2&d=1201055452
    Entity Relationship Diagramming http://www.rogersaccesslibrary.com/T...lationship.zip

    Video tutorials:
    If you google for videos "normalization langer" you will find a series of free videos by Dr.Art Langer. These are quite good for learning by Watching/Listening rather than reading.

    http://www.youtube.com/watch?v=IiVq8M5DBkk Logical data modeling

    http://www.youtube.com/watch?v=BGMwuOtRfqU Candidate key

    http://www.youtube.com/watch?v=ZiB-BKCzS_I Normalization

    http://www.youtube.com/watch?v=pJ47btpjAhA Normalization example

    http://www.youtube.com/watch?v=q3Wg2fZENK0 1st Normal form

    http://www.youtube.com/watch?v=vji0pfliHZI 2nd Normal form

    http://www.youtube.com/watch?v=HH-QR7t-kMo 3rd Normal form

    http://www.youtube.com/watch?v=q1GaaGHHAqM E_R Diagramming

    Complete set of tutorials on Acc2010.
    https://www.youtube.com/playlist?lis...FoilxbUY0yUqZP

    Good luck.

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