How to Connect Power BI to a SQL Database and Build Your First Dashboard

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A technical guide published on DEV Community explains how analysts can connect Microsoft Power BI to a PostgreSQL database to build interactive dashboards. The workflow involves querying and preparing data using SQL, then importing it into Power BI for visualization and reporting. Power BI offers two connection modes — Import Mode, which loads data into memory for faster performance, and DirectQuery, which pulls live data directly from the database. The guide covers both local PostgreSQL setups and cloud-hosted databases such as Aiven PostgreSQL, walking through steps like authentication, table selection, and data modeling. The tutorial is aimed at beginners and those building portfolio projects who want to turn raw database records into actionable business insights.

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