Context: For instance, a common use of a database system is to track information about users, their name, login information, various addresses and phone numbers. In the navigational approach all of this data would be placed in a single record, and unused items would simply not be placed in the database. In the relational approach, the data would be normalized into a user table, an address table and a phone number table (for instance). Records would be created in these optional tables only if the address or phone numbers were actually provided.

Question: How is a database system frequently used?
Answer: to track information about users

Question: How is information stored in a navigational system?
Answer: in a single record

Question: What happens to blank data fields in a navigational system?
Answer: not be placed in the database

Question: How is information stored in a relational system?
Answer: normalized into a user table

Question: How is a database system rarely used?
Answer: Unanswerable

Question: How is information discarded in a navigational system?
Answer: Unanswerable

Question: What happens to full data fields in a navigational system?
Answer: Unanswerable

Question: How is information lost in a relational system?
Answer: Unanswerable