SQL Database question:

1. Generally, which one is not a problem encountered when using spreadsheets to store data? (choose one)

a. they are too slow

b. they have limited security

c. you can't easily access related data

d. they can lead to redundantly store data

2. When modeling an object, person, or thing in a database, we refer to it as a(n) ---- (Choose one)

a. entity

b.attribute

c.relationship

d.form