A typical data warehouse often includes the following elements:- A relational database to store and manage data.
- An extraction, loading, and transformation (ELT) solution for preparing the data for analysis.
- Statistical analysis, reporting, and data mining capabilities.
A data warehouse may contain multiple databases. Within each database, data is organized into tables and columns. Within each column, you can define a description of the data, such as integer, data field, or string. Tables can be organized inside of schemas, which you can think of as folders.
Data Warehouse vs. Data Lake
A data warehouse gathers raw data from multiple sources into a central repository, structured using predefined schemas designed for data analytics Data Warehouse vs. Data Mart
A data mart is a subset of a data warehouse that contains data specific to a particular business line or department Data Warehouse vs. Database
A database is built primarily for fast queries and transaction processing, not analytics Cloud Data Warehouse
A cloud data warehouse is a data warehouse specifically built to run in the cloud, and it is offered to customers as a managed service Data Warehouse Software
A business can purchase a data warehouse license and then deploy a data warehouse on their own on-premises infrastructure Data Warehouse Appliance
A data warehouse appliance is a pre-integrated bundle of hardware and software—CPUs, storage, operating system ×A data warehouse environment includes:
- A relational database to store and manage data.
- An extraction, transportation, transformation, and loading (ETL) solution for preparing the data for analysis.
- An online analytical processing (OLAP) engine.
- Client analysis tools.
- Other applications that manage the process of gathering data and delivering it to business users.
- Business intelligence tools.
- Tools to extract, transform, and load data into the repository.
- Tools to manage and retrieve metadata.
- Statistical analysis, reporting, and data mining capabilities.
- Multiple tables containing the collected data.
,In addition to a
relational database, a data warehouse environment includes an extraction, transportation, transformation, and loading (ETL) solution, an online analytical processing (OLAP) engine, client analysis tools, and other applications that manage the process of gathering data and delivering it to business users.
A typical data warehouse often includes the following elements: A relational database to store and manage data. An extraction, loading, and transformation (ELT) solution for preparing the data for analysis. Statistical analysis, reporting, and data mining capabilities.
Thus, an expanded definition of data warehousing includes
business intelligence tools, tools to extract, transform, and load data into the repository, and tools to manage and retrieve metadata.Data warehouses are typically composed of several basic entities, such as the
main database, the information systems that feed the database, and the analytical tools. The main database consists of multiple tables containing the collected data.A data warehouse (DW or DWH) is a complex system that stores historical and cumulative data used for forecasting, reporting, and data analysis. It involves
collecting, cleansing, and transforming data from different data streams and loading it into fact/dimensional tables.