# Where does the data come from? Pentaho Analyzer leverages OLAP technology and multi-dimensional query expressions (MDX) to dynamically retrieve data from relational databases (RDBMS). Analyzer is most often used to query data in an organization’s data warehouse, which generally consolidates data from multiple source systems into a common place for information analysis and reporting. Pentaho Data Integration (PDI) is a popular tool used for building and populating data warehouses and usable data models. PDI can load data from applications, databases, and spreadsheets within your company, as well as from external and public data sources. Tools like PDI are typically managed by your system administrator. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.pentaho.com/pba/pentaho-analyzer-cp/working-with-analyzer-fields/where-does-the-data-come-from.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.