Please Answer and explain this!

1. Write out a schema for the table
2. Write out example contents for the table featuring 5 items that come from two different suppliers.
3. Rewrite the data from part #2 as if it had been stored in a text file (use , to separate the fields).
4. Explain three different problems we could encounter if we were using a raw text file as the way of storing our data be precise, explaining the problem in the context of operations on the inventory data. Explain how the database solves them.