Data Sources: These are the original systems from which data is extracted, such as transactional databases, flat files, and external data feeds.
ETL Process: This involves extracting data from source systems, transforming it into a suitable format, and loading it into the data warehouse.
Data Storage: This is the actual database where cleansed and transformed data is stored. It is often organized into
data marts for specific business areas.
Metadata: This provides information about the data, such as its source, structure, and transformation rules, enabling users to understand and utilize the data effectively.
Data Access Tools: These include query tools, reporting tools, and online analytical processing (
OLAP) tools that allow users to interact with and analyze the data.