Each scenario describes particular database requirements. Match the database architecture to the scenario.

$($a$)$ A company wants to analyze the impact of news stories on all stock price data across Europe and Asia.

$($b$)$ A company wants to analyze how to increase production efficiency by breaking down material costs and hours of labor at each stage of production.

$($c$)$ A non$-$profit organization stores a user's demographics via the user's browser's built$-$in cache.

$($d$)$ A non$-$profit organization stores info on volunteers, donors, and applicants in separately maintained databases. The organization wants to simplify interactions with these databases for their legal team.