Consider the following two statements and choose the correct option: S1: Each record of the referencing relation can relate to at most one record of the referenced relation. S2: Each record of the referenced relation can relate to at most one record of the referencing relation.?

Question

Answer

Software Development: Referencing and Referenced Relations

Statement 1: Each record of the referencing relation can relate to at most one record of the referenced relation.

This statement is true, as a referencing relation is a table that contains a foreign key which refers to the primary key of another table, which is the referenced relation.

Each record in the referencing relation can only refer to one record in the referenced relation. This is because a foreign key value can only match one primary key value.

Therefore, each record in the referencing relation can relate to at most one record in the referenced relation.

Statement 2: Each record of the referenced relation can relate to at most one record of the referencing relation.

This statement is also true, as a referenced relation is a table that contains a primary key which is referred to by a foreign key in another table, which is the referencing relation.

Each record in the referenced relation can only be referred to by one record in the referencing relation. This is because a primary key value can only be matched by one foreign key value.

Therefore, each record in the referenced relation can relate to at most one record in the referencing relation.

Conclusion

Both statements are true and are a fundamental concept in relational database design.

These constraints ensure data integrity and prevent data inconsistencies in the database.

It is important to understand these concepts when designing and working with databases.

Answer

S1 is true, S2 is false

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