Once you've figured out how to store your contact database, now you have to manage it effectively. Can you open your address book right now and pull up a name of a client, co-worker or vendor and at a glance see a record of every communication you've had with that person, including phone calls? Do you remember weeks later that you left a message that was never returned? Do you know whether or not you owe that person a phone call or note? Do you have a record of the fact that you sent them a package of materials last month? Do you link your business contacts together, so you can visually map relationships between them?