INTERVIEW QUESTIONS ORACLE CONCEPTS AND ARCHITECTURE DETAILS

Question: Describe Referential Integrity ?

Answer: A rule defined on a column (or set of columns) in one table that allows the insert or update of a row only if the value for the column or set of columns (the dependent value) matches a value in a column of a related table (the referenced value). It also specifies the type of data manipulation allowed on referenced data and the action to be
performed on dependent data as a result of any action on referenced data.

A rule defined on a column (or set of columns) in one table that allows the insert or update of a row only if the value for the column or set of columns (the dependent value) matches a value in a column of a related table (the referenced value). It also specifies the type of data manipulation allowed on referenced data and the action to be
performed on dependent data as a result of any action on referenced data. Source: CoolInterview.com

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