A ____ type of relationship is rare in the world of databases.
A) one-to-one
B) one-to-many
C) many-to-many
D) all of the above

Question

Quizplus · Accepted Answer

One-to-one relationships in databases are considered rare because most information structured in a database is designed to exploit relationships where a single record in one table can be related to multiple records in another (one-to-many) or where multiple records in two tables can be interconnected (many-to-many). One-to-one relationships are less common as they often indicate that two entities could potentially be stored in a single table, except in cases where there's a specific need to separate the data for reasons such as privacy, security, or database optimization.

A ____ Type of Relationship Is Rare in the World