A data warehouse is a central repository of integrated data whose content is derived from the various operational databases and is used to store current and historical data in one place. Data in the data warehouse often goes through a cleansing process referred to as ETL or Extract, Transform and Load. The ETL process is ...
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A relational database is a database that represents data as a collection of tables in which all data relationships are represented by common values in related tables. Relational databases are tabular (table-like) and inflexible in their design. Each record contains the same exact fields, whether those fields contain data or not.
A user story is an Agile term that describes how the application will work from the user's point of view.
Information Systems are systems designed to support decision making based on historical point-in-time and prediction data for complex queries or data-mining applications.
The normalization of data refers to the process of cleaning up the structure of the data in order to reduce redundancy and dependency of the data.
A database is a collection of data that is stored permanently and typically has an interface allowing user interaction.