1. Introduction to Business Intelligence and Power BI
1.1 What is Business Intelligence?
In short: Business Intelligence (BI) is the process of collecting data, cleaning and organising it, and presenting it in a way that helps people take better business decisions.
Business Intelligence (BI) is the process of collecting data, cleaning and organising it, and presenting it in a way that helps people take better business decisions. In simple words, BI turns raw data into useful information.
Mitrano, think of a quick-commerce company that delivers groceries in minutes from many dark stores across cities such as Pune, Nashik and Nagpur. Every day it records a huge number of orders. Looking at those rows in a spreadsheet tells you almost nothing. But a BI report can quickly answer questions such as:
- Which city and which dark store (say, Kothrud in Pune or Dharampeth in Nagpur) received the most orders this week?
- What share of orders was delivered within 10 minutes?
- Which product categories are growing and which are declining compared to last year – and how big was the Diwali or Ganeshotsav spike?
- What is the cancellation rate, and at which hours of the day does it go up?
- Are discounts actually increasing orders, or only reducing margin?
A BI solution normally has four layers:
| Layer | What happens | Example in Power BI |
|---|---|---|
| Data sources | Where data lives | Excel files, CSV, SQL Server, SharePoint, web APIs |
| Data preparation (ETL) | Extract, Transform, Load: clean and shape data | Power Query Editor |
| Data model | Tables, relationships and calculations | Model view, DAX measures |
| Presentation | Reports, dashboards, sharing | Report view, Power BI Service, Mobile app |
BI vs. traditional Excel reporting
Excel is excellent for small, one-time analysis. BI tools like Power BI are built for repeatable reporting: you build the cleaning steps and the model once, and every refresh brings in new data automatically. They also handle millions of rows, relationships (संबंध) between many tables, and secure sharing across an organisation.
Ravindra Bagale's Tip
Friends, many students think BI means "making charts". My advice: start every project by writing down the three or four business questions the report must answer, for example "Which Pune store misses the 10-minute promise most often?". Charts come last. If you can't name the decision a visual supports, remove it.
Ravindra Bagale's Tip – मराठी
मित्रांनो, बऱ्याच students ना वाटतं BI म्हणजे "charts बनवणं". माझं सांगणं आहे, प्रत्येक project ची सुरुवात report ने उत्तर द्यायचे तीन-चार business प्रश्न लिहून करा, उदाहरणार्थ "Which Pune store misses the 10-minute promise most often?". Charts सगळ्यात शेवटी. एखादा visual कोणत्या निर्णयाला मदत करतो ते सांगता येत नसेल, तर तो काढून टाका.
Ravindra Bagale's Tip – हिंदी
दोस्तों, बहुत से students सोचते हैं BI का मतलब "charts बनाना" है. मेरी सलाह है, हर project की शुरुआत उन तीन-चार business सवालों को लिखकर करो जिनका जवाब report को देना है, जैसे "Which Pune store misses the 10-minute promise most often?". Charts सबसे आख़िर में. अगर तुम नहीं बता सकते कि कोई visual किस फ़ैसले में मदद करता है, तो उसे हटा दो.