What is data flow in data warehouse?
Similarly, it is asked, what is data flow process?
A data-flow diagram (DFD) is a way of representing a flow of a data of a process or a system (usually an information system). The DFD also provides information about the outputs and inputs of each entity and the process itself. A data-flow diagram has no control flow, there are no decision rules and no loops.
Also Know, what are the component of data warehouse? Components of a Data Warehouse
- Overall Architecture.
- Data Warehouse Database.
- Sourcing, Acquisition, Cleanup and Transformation Tools.
- Meta data.
- Access Tools.
- Data Marts.
- Data Warehouse Administration and Management.
- Information Delivery System.
Keeping this in view, what do you mean by data warehousing?
A data warehouse is a subject-oriented, integrated, time-variant and non-volatile collection of data in support of management's decision making process. Subject-Oriented: A data warehouse can be used to analyze a particular subject area. For example, "sales" can be a particular subject.
What is data mart in data warehouse?
A data mart is a structure / access pattern specific to data warehouse environments, used to retrieve client-facing data. The data mart is a subset of the data warehouse and is usually oriented to a specific business line or team. Data warehouses are designed to access large groups of related records.