I need help answering a couple questions from Succeeding in Business Microsoft Access 2013

When tables are related, they can be queried as one large table. Explain the advantage of managing data in this manner versus trying to manage data in multiple worksheets in Excel. Describe the motivations that a business, such as the 4Corners Pharmacy, might have for gathering all of their data and storing it in oil relational database. Give an example of how data redundancy might occur in a table. Give an example of hew erroneous data might result using Excel workbooks versus an Access database