The cardinality that is relatively less in number in most normalized database systems is C. One-to-One.

Here's why:

A. One-to-Many: This is a very common relationship in databases. For example, one customer can place many orders, so the relationship between customers and orders is one-to-many.

B. Many-to-One: This is essentially the reverse of a one-to-many relationship. Using the previous example, many orders can be placed by one customer, so the relationship between orders and customers is many-to-one.

C. One-to-One: This is less common because it implies that each record in one table corresponds to exactly one record in another table. This is not often the case in normalized databases, as the goal of normalization is to reduce redundancy, and one-to-one relationships can often be consolidated into a single table.

D. Many-to-Many: This is also a common relationship. For example, a student can take many courses, and a course can have many students, so the relationship between students and courses is many-to-many.

Question

The cardinality that is relatively less in number in most normalized database systems is C. One-to-One.

Here's why:

A. One-to-Many: This is a very common relationship in databases. For example, one customer can place many orders, so the relationship between customers and orders is one-to-many.

B. Many-to-One: This is essentially the reverse of a one-to-many relationship. Using the previous example, many orders can be placed by one customer, so the relationship between orders and customers is many-to-one.

C. One-to-One: This is less common because it implies that each record in one table corresponds to exactly one record in another table. This is not often the case in normalized databases, as the goal of normalization is to reduce redundancy, and one-to-one relationships can often be consolidated into a single table.

D. Many-to-Many: This is also a common relationship. For example, a student can take many courses, and a course can have many students, so the relationship between students and courses is many-to-many.

Knowee AI · Accepted Answer

The cardinality that is relatively less in number in most normalized database systems is C. One-to-One.

Here's why:

A. One-to-Many: This is a very common relationship in databases. For example, one customer can place many orders, so the relationship between customers and orders is one-to-many.

B. Many-to-One: This is essentially the reverse of a one-to-many relationship. Using the previous example, many orders can be placed by one customer, so the relationship between orders and customers is many-to-one.

C. One-to-One: This is less common because it implies that each record in one table corresponds to exactly one record in another table. This is not often the case in normalized databases, as the goal of normalization is to reduce redundancy, and one-to-one relationships can often be consolidated into a single table.

D. Many-to-Many: This is also a common relationship. For example, a student can take many courses, and a course can have many students, so the relationship between students and courses is many-to-many.

Which of the following cardinalities is relatively less in number in most normalised database systems? A. One-to-Many B. Many-to-One C. One-to-One D. Many-to-Many

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