Compiled Data - This is regularly updated data
pulled from public records such as postal records, county
recorder offices, government records, telephone directories,
and credit bureaus. This type of data is best used when demographic
criteria is the best method of targeting your most likely
prospect.
Response
Data - These are privately owned files that are
collections of people who have had to take a specific action
to get on the marketing lists. Subscribing to a magazine,
purchasing a product, filling out a warranty card, entering
a sweepstakes, and joining a club are all examples of the
kind of actions taken that qualify someone to become part
of a response list.
Sales
Leads - These are proactive requests from a prospect
indicating an active interest in purchasing a specific product
or service.