Answer the following questions in a document format: List the characteristics a table must have to be considered a relation. Explain the use of the terms relation, tuple, and attribute. Explain the difference between a primary key and a candidate key. What is a surrogate key, and under what circumstances would you use one? Explain the term foreign key and give an example. Define the term referential integrity constraint and give an example of one. Define the terms functional dependency and determinant, using your own examples.