A program which is often started at the time the system boots and runs continuously without intervention from any of the users on the system. The daemon program forwards the requests to other programs (or processes) as appropriate. The term daemon is a Unix term, though many other operating systems provide support for daemons, though they're sometimes called other names. Windows, for example, refers to daemons and System Agents and services.
Data Aggregation is the ability to get a more complete picture of the information by analyzing several different types of records at once.
A Data Custodian is the entity currently using or manipulating the data, and therefore, temporarily taking responsibility for the data.
A widely-used method of data encryption using a private (secret) key. There are 72,000,000,000,000,000 (72 quadrillion) or more possible encryption keys that can be used. For each given message, the key is chosen at random from among this enormous number of keys. Like other private key cryptographic methods, both the sender and the receiver must know and use the same private key.
Data Mining is a technique used to analyze existing information, usually with the intention of pursuing new avenues to pursue business.
A Data Owner is the entity having responsibility and authority for the data.
Data Warehousing is the consolidation of several previously independent databases into one location.