Extend the phone book application in homework 3 by now using the multi-level DBM module, MLDBM.pm. Each person in the phone book will now have an address, a social security number, and 1 to 3 phone numbers (e.g. a home number and work number). You can decide on how the data is structured in your database and what kind of labels you will use.

Make sure that your application let's you enter in a new person with their information and also let's you delete a person. You are not required to create an option to modify an existing entry (we can assume that if a person's address or phone number is changed, we will delete their entire record and enter a new one).