Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Codd's 12 rules
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
{{Short description|Relational database design}} '''Codd's twelve rules'''<ref name="coddsrules">{{cite web|url=https://reldb.org/c/index.php/twelve-rules/|title=Codd's 12 Rules |date=2019-06-30|publisher=RelDB.org|access-date=August 14, 2020}}</ref> are a set of thirteen rules ([[Zero-based numbering|numbered zero to twelve]]) proposed by [[Edgar F. Codd]], a pioneer of the [[relational model]] for [[database]]s, designed to define what is required from a [[database management system]] in order for it to be considered ''relational'', i.e., a [[relational database management system]] (RDBMS).<ref>{{citation | last = Codd | first = Edgar Frank | title = Is Your DBMS Really Relational? | journal = Computerworld | date = 14 October 1985}}.</ref><ref>{{citation | last = Codd | first = Edgar Frank | title = Does Your DBMS Run By the Rules | journal = Computerworld | date = 21 October 1985}}.</ref> They are sometimes referred to as "Codd's Twelve Commandments".<ref name="Cowley">{{cite book |last1=Cowley |first1=Stewart |title=Man vs Big Data: Everyday data explained |date=2017 |isbn=9781781317563 |url=https://books.google.com/books?id=bTI7DwAAQBAJ&dq=%22Codd%27s+Twelve+Commandments%22&pg=PT29 |access-date=22 January 2022}}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)