Data warehousing wikipedia

  • Data warehouse companies

    A data warehouse is a system that stores data from a company's operational databases as well as external sources.
    Cloud-based technology has revolutionized the business world, allowing companies to easily retrieve and store valuable data about their customers, products and employees..

In essence, the data warehousing concept was intended to provide an architectural model for the flow of data from operational systems to decision support environments. The concept attempted to address the various problems associated with this flow, mainly the high costs associated with it.

ETL-based data warehousing

The typical extract, transform, load (ETL)-based data warehouse uses staging, data integration, and access layers to house its key functions

ELT-based data warehousing

ELT-based data warehousing gets rid of a separate ETL tool for data transformation. Instead

Benefits

A data warehouse maintains a copy of information from the source transaction systems

Generic

The environment for data warehouses and marts includes the following:

Related systems (data mart, OLAP, OLTP, predictive analytics)

A data mart is a simple form of a data warehouse that is focused on a single subject (or functional area)

What is a data warehouse bus architecture?

The data warehouse bus architecture is primarily an implementation of "the bus", a collection of conformed dimensions and conformed facts, which are dimensions that are shared (in a specific way) between facts in two or more data marts

The top-down approach is designed using a normalized enterprise data model

What is real-time data warehousing?

Real-time data warehousing (RDW) Traditionally data warehouses are updated periodically, for example weekly, to provide decision makers with information for decision making

From Wikitia In computing, a data warehouse (DW or DWH), sometimes known as an enterprise data warehouse (EDW), is a system that is used for reporting and data analysis. It is regarded to be a critical component of business intelligence because of its widespread usage.

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