data warehouse concepts ppt
Fact table consists of at least two types of data: keys and measures. And big data is not following proper database structure, we need to use hive or spark SQL to see the data by using hive specific query. Robert Wrembel ... Multiversion Data Warehouse. This technology offers the power to distribute information fast and securely, thus making real-time data exchange for warehouses efficient and transparent. Several concepts are of particular importance to data warehousing. Agenda Intro to Data Warehouse Concepts Data Mart / Data Warehouse / Enterprise Data Warehouse Top Down Vs Bottom Up ODS (Operational Data Source) Introduction to Dimension Modeling (OLAP Modeling) Measure or Fact Dimensions Hierarchies Types of Dimensions and Measures Schemas Star Schema Snow Flake Schema. In this way, the data searches and analytics could be used to retrieve information. 13 13 The Data Warehouse The Data Warehouse Integrated because of the coming together of source data from different enterprise-wide applications systems. Summarized from the first chapter of 'The Data Warehouse Lifecyle Toolkit : Expert Methods for Designing, Developing, and Deplo… It is not a database. Data Warehousing -- a process
It is a relational or multidimensional database management system designed to support management decision making.
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