Answers for ORACLE Online Test | Mock Test

Ques. How 1-to-1relationships are implemented while designing tables?

Option 1. One-to-One relationship is implemented as a many table and rarely as one table with primary and foreign key relationship.

Option 2. One-to-One relationship is implemented as a single table and frequently as on one table with primary and foreign key relationship.

Option 3. One-to-One relationship is implemented as a single table and rarely as two tables with primary and foreign key relationship.

Option 4. One-to-One relationship is implemented as a multi table and frequently as on one table with primary and foreign key relationship.

Ans. Option 3

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