filling extract
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Extract, transform, load — Extract, transform and load (ETL) is a process in database usage and especially in data warehousing that involves: Extracting data from outside sources Transforming it to fit operational needs (which can include quality levels) Loading it into… … Wikipedia
Data warehouse — Overview In computing, a data warehouse (DW) is a database used for reporting and analysis. The data stored in the warehouse is uploaded from the operational systems. The data may pass through an operational data store for additional operations… … Wikipedia
Data mining — Not to be confused with analytics, information extraction, or data analysis. Data mining (the analysis step of the knowledge discovery in databases process,[1] or KDD), a relatively young and interdisciplinary field of computer science[2][3] is… … Wikipedia
Database — A database is an organized collection of data for one or more purposes, usually in digital form. The data are typically organized to model relevant aspects of reality (for example, the availability of rooms in hotels), in a way that supports… … Wikipedia
Data mart — A data mart (DM) is the access layer of the data warehouse (DW) environment that is used to get data out to the users. The DM is a subset of the DW, usually oriented to a specific business line or team. Contents 1 Terminology 2 Design schemas 3… … Wikipedia
Data Mining Extensions — (DMX) is a query language for Data Mining Models supported by Microsoft s SQL Server Analysis Services product. Like SQL, it supports a data definition language, data manipulation language and a data query language, all three with SQL like syntax … Wikipedia
Data warehouse appliance — In computing, a data warehouse appliance consists of an integrated set of servers, storage, operating system(s), DBMS and software specifically pre installed and pre optimized for data warehousing (DW). Alternatively, the term can also apply to… … Wikipedia
Online analytical processing — In computing, online analytical processing, or OLAP ( /ˈoʊlæ … Wikipedia
Decision support system — Example of a Decision Support System for John Day Reservoir. A decision support system (DSS) is a computer based information system that supports business or organizational decision making activities. DSSs serve the management, operations, and… … Wikipedia
Data dictionary — Not to be confused with Dictionary (data structure). A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a centralized repository of information about data such as meaning, relationships to other data,… … Wikipedia
OLAP cube — An OLAP cube (for online analytical processing) is a data structure that allows fast analysis of data.[1] It can also be defined as the capability of manipulating and analyzing data from multiple perspectives. The arrangement of data into cubes… … Wikipedia
