What is meant by one to one relation in the database?

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What is meant by one to one relation in the database
What is meant by one to one relation in the database

If a record in one table of a database is related to a single record in another data table, then the relationship that is formed between them is called one to one relation. For example,

if the primary key relationship is created with the primary key, one to one relationship will be created.

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