___________ is data collected from natural systems.

Related MCQs

• The important aspect of the data warehouse environment is that data found within the data warehouse is___________.
• Data marts that incorporate data mining tools to extract sets of data are called ______.
• The important aspect of the data warehouse environment is that data found within the data warehouse is___________.
• In web mining, _______ is used to find natural groupings of users, pages, etc.
• __________describes the data contained in the data warehouse.
• The source of all data warehouse data is the____________.
• The most common source of change data in refreshing a data warehouse is _______.
• ______________ is data about data.
• The data from the operational environment enter _______ of data warehouse.
• Data that are not of interest to the data mining task is called as ______.