Private corporate data are often encrypted using a key, which is needed to decrypt the information. Who within the corporation should be responsible for maintaining the "keys" to private information collected about consumers? Is that the same person who should have the keys to employee data? Please explain.

How do foreign keys protect a database? What's your evidence?

Make a list of all the databases that have data about you and your previous actions, and keep it close to hand. How are the data collection methods for each database different from one another? Each database has to be updated often, but who is responsible for doing this? Any database that you often use gives you the option to print its contents. Do you worry about the privacy and security of your personal data?

Database integrity is ensured through the use of foreign keys. Which pieces of evidence support your claim?