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Table Design Rules
 






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0th Normal Form (0nf)
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Repair Corrupted Table


Access Table Design by Blue Claw Database

Table Design Definition, Examples and Recommendations

We typically design tables to 2nd and 3rd normal form when it makes sense. 



Are you just starting out on your quest for a database? Need some advice or someone to bounce ideas off of? We are here and will be happy to chat with you on the phone and discuss options to your situation. Visit our contact page and give us a call.

Did you know that most template databases often do not do exactly what you need done? We can create a custom template that fits your needs exactly for a small to medium Access database at a reduced cost. See our contact page and call Joseph Dean for more info.


However, the key to an efficient, long-lived, fast, reliable, maintainable database is to not copy data from one table to another.  As a result of this rule the structure of dependent tables is not dependent directly on the data contained in the master or parent tables - we always use artificial keys (autonumber fields) to link tables. 

Use of artificial keys gives us the ability to never perform cascade updates on related, subordinate tables.  In our table design there, where ever possible, there is only a single occurrence of a data item in the database - all other occurrences use the previously mentioned autonumber fields to point to the single-value entry .

The last and possibly most important theme is to prevent duplicate data records where ever possible.

It is important that you learn about database table normalization.  Normalization is a scientific procedure with a little art involved that guides you through the process of building tables with related attribute fields.  The table normalization steps progress in sophistication starting at first normal form, going next to second normal form, then to 3rd normal form.  For some applications it is advised to go to the final level which is referred to as Boyce-Codd normal form.

Review our step by step discussion in this table design section of our website.  The hub page has links to the six important pages in this section.










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