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Foreign keys can handle deletes and updates.
Answer & Solution
Correct Answer:
Option
A
This question asks if foreign keys can handle deleting and updating data in a database.
Let's break it down:
Foreign Keys are like connections between different tables in a database. Imagine you have a table for customers and another for orders. A foreign key in the orders table might link each order to the specific customer who placed it.
How Foreign Keys Handle Deletes and Updates:
* Deleting a Customer: If you try to delete a customer who has existing orders, the database will likely prevent the deletion to maintain data integrity. This is because deleting the customer would leave orders without a valid reference.
* Updating a Customer: If you change information about a customer, the changes might be reflected in the orders table, depending on how the foreign key constraint is set up.
Therefore, the answer is:
Option A: True
Let's break it down:
Foreign Keys are like connections between different tables in a database. Imagine you have a table for customers and another for orders. A foreign key in the orders table might link each order to the specific customer who placed it.
How Foreign Keys Handle Deletes and Updates:
* Deleting a Customer: If you try to delete a customer who has existing orders, the database will likely prevent the deletion to maintain data integrity. This is because deleting the customer would leave orders without a valid reference.
* Updating a Customer: If you change information about a customer, the changes might be reflected in the orders table, depending on how the foreign key constraint is set up.
Therefore, the answer is:
Option A: True
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