File terminology

Which of the following is/are true?
  1. A billing file would have one record for each customer
  2. A billing record would have one file for each customer
  3. A billing file would have one field for each customer
  4. A billing field would have one record for each customer
  5. A billing file would have multiple records for each customer
  6. A billing record would have one field for each customer
  7. A billing record would have multiple fields for each customer
  8. A billing file would have several records for each customer
Explain your answers.

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