Question

use the following data model for this question: part part id part name bike bike id bike part bike part id bike id part id which of the following is a situation where an outer join could be useful? a.) when a bike mechanic wants to see only bike parts in their inventory that are not being utilized for a particular bike model b.) when a bike mechanic wants to see only bike models that require parts that are currently in the inventory c.) when a bike mechanic wants to see all bike parts in their inventory, whether they are being utilized for a particular bike model or not d.) when a bike mechanic wants to see only bike parts in their inventory that are being utilized for a particular bike model

Answer 1

The correct situation where an outer join could be useful is: c.) When a bike mechanic wants to see all bike parts in their inventory, whether they are being utilized for a particular bike model or not.

In the provided data model with "part," "bike," and "bike part" relationships, the situation where an outer join could be useful is option (c).

When a bike mechanic wants to see all bike parts in their inventory, whether they are being utilized for a particular bike model or not, an outer join ensures that every bike part in inventory is included in the result, even if it is not associated with a specific bike model.

This comprehensive view assists in inventory management by displaying all available bike parts, aiding in decision-making regarding stock levels, usage, and potential shortages across various bike models in the mechanic's inventory.