Codd's Twelve Rules - Rule 1 - Information Rule

Codd's Twelve Rules / Rule 1 - Information Rule

Rule 1	Information Rule
Rule	All information in the relational database is represented in exactly one and only one way — by values in tables.
Description	Every piece of data/information that we store in a database permanently is in tables only. We will not be able to store in any other component other than tables.
Example	Emp_ID EName E101 Kumar E102 Virat E105 Sachin E103 Gurucharan E110 Kumar Sample table Employee is given above. Here, the record of every employee is stored in the table only.
Some DBMS that fulfills this property:	SQL Server, Oracle, and MySQL support tables with rows and columns.

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