Question

Which of the following scenarios reflect the consistency property?

1. A user attempts to remove a product from the product table.
2. The product has been purchased by other individuals and exists in the order table.
3. The transaction is denied due to a foreign key constraint

Answer 1

The given scenario where a transaction to remove a product from a product table is denied due to a foreign key constraint reflects the consistency property in database systems,

Step-by-step explanation:

The scenario presented reflects the consistency property in database systems. This property is part of the ACID principles which ensure transaction reliability in database management systems. In this scenario, the transaction of removing a product from a product table is denied due to a foreign key constraint.

This illustrates consistency because the database system is enforcing referential integrity; the product cannot be removed because it is referenced in the order table by other transactions corresponding to its purchases.

The denial of the transaction protects the integrity of the data within the database, ensuring that all relationships and rules defined by the database schema are upheld. Without such constraints, deleting the product record could lead to orphaned records in the order table, which would compromise the database's consistency.