Refer to the relationship/class diagram to explain what a Component is and how it is connected to a Bicycle. Give an example from the data. Use the Employee table and Excel to compute the company’s...

Refer to the relationship/class diagram to explain what a Component is and how it is connected to a Bicycle. Give an example from the data.

Use the Employee table and Excel to compute the company’s total salary costs. What problems might you encounter if you tried a similar approach for a table with 5 million customers?