A database is a collection of data that's organized so data can be accessed, managed and updated easily. Databases usually contain aggregation of data records such as sales translations, inventories, product catalogs for advertisements, and customer profiles. The actual collection of data into to databases is call data mining. Databases are always set to receive new information using data that has been fetched over time. Most marketers evolve in their databases in order to insure their kept up on customer patterns and trends to build a sort of relationship with their customers.