Connecting Power BI to PostgreSQL: A Step - by - Step Guide Using Local PostgreSQL and Aiven Cloud Database

Introduction
Power BI is one of the most widely used business intelligence tools because it enables analysts to connect to multiple data sources, clean data , create interactive dashboards and support data- driven decision making.
For this project, I worked with raw Jcars dataset (car sales and delivery records for a dealership operating across Kenya)and the need to get it into Power BI through PostgreSQL rather than a flat file.

Project Objectives
The objectives were to;

• Import the raw dataset into PostgreSQL

• Connect Power BI to PostgreSQL.

• Clean and transform the data.

• Design an interactive management dashboard

• Generate insights and recommendations.

Part 1: Importing the dataset into PostgreSQL
Create an Aiven PostgreSQL and ensure that the service is running.

Connect to the database using DBeaver and import the CSV file

Confirm that all records have been loaded successfully.

Part 2:Connecting Power BI to PostgreSQL

• Open Power Bi Desktop

• Get Data - More - Database - PostgreSQL database

     **Common Issues and Fixes**

• "Unable to connect: SSL error"
  It means the CA certificate wasn't trusted correctly on the machine. Re- import it into the certificate store and restart Power BI.

• "Connection Times Out"
  Check that your IP is allowed in Aiven's connection settings.

• "Wrong data types after import"
  This is a data cleaning issue not a connection issue. Fix it at the source table.

             **Conclusion**
  

  Using PostgreSQL together with Power BI provides a scalable solution for storing, transforming and analyzing business data.

While cloud databases introduce additional security considerations such as SSL certificates, they also offer reliability and accessibility for modern analytics workflows