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What is Data preprocessing? Data preprocessing is a data mining technique that involves transforming incomplete, inconsistent, and/or noisy data which increase chances of error and misinterpretation, into an understandable format.
What is Data Mart? Data mart is subset of data warehouse oriented to particular business subject line. The data mart contains repository of summarized data collected for analysis for specific
Data sets are made up of data objects. A data object represents an entity. Examples: – sales database: customers, store items, sales – medical database: patients, treatments – university database:
Three-tier data warehouse architecture is the most widely used architecture of data warehouse as it produces a well-organized data flow from raw information to valuable insights. It consists of the
The conceptual data model is a structured business view of data required to support business, processes,record business events and track related performance measures. This model focuses on identifying data used