📊 Power BI – Complete Guide
🔹 What is Power BI?
Power BI is a business intelligence (BI) tool by Microsoft used to:
- Analyze data
- Create interactive dashboards & reports
- Convert raw data into useful insights
- Help companies make better decisions
It is widely used in IT, finance, sales, marketing, HR, and operations.
🔹 Components of Power BI
1️⃣ Power BI Desktop
- Free desktop application
- Used to create reports & dashboards
- Main working tool
2️⃣ Power BI Service (Cloud)
- Online platform
- Share reports with teams
- Schedule data refresh
3️⃣ Power BI Mobile
- View dashboards on mobile devices
🔹 Power BI Course Syllabus (Detailed)
1️⃣ Data Sources
You learn how to connect Power BI with:
- Excel
- CSV / Text files
- SQL Server
- MySQL
- Web data
- SharePoint
2️⃣ Power Query (Data Cleaning)
Very important part 🧹
- Remove duplicates
- Handle missing values
- Merge & append tables
- Change data types
- Data transformation
3️⃣ Data Modeling
- Relationships (one-to-many)
- Star & snowflake schema
- Calculated columns
- Measures
4️⃣ DAX (Data Analysis Expressions)
Used for calculations
You learn:
- SUM, AVERAGE, COUNT
- IF, CALCULATE
- FILTER
- Time intelligence (YTD, MTD)
5️⃣ Data Visualization
Create charts like:
- Bar & Column charts
- Line & Area charts
- Pie & Donut charts
- Tables & Matrices
- KPIs & Cards
- Maps
6️⃣ Dashboards & Reports
- Interactive reports
- Slicers & filters
- Drill-down & drill-through
- Custom visuals
7️⃣ Publishing & Sharing
- Publish reports to Power BI Service
- Create dashboards
- Share with users
- Row Level Security (RLS)
🔹 Advanced Power BI Topics
- Incremental refresh
- Power BI with Excel
- Power BI with SQL
- Performance optimization
- Data security
🔹 Power BI vs Excel
| Power BI | Excel |
|---|---|
| Large data handling | Limited data |
| Interactive dashboards | Static reports |
| Automatic refresh | Manual refresh |
🎓 Eligibility
- Basic computer knowledge
- Excel basics helpful
- No programming required
💼 Job Roles
- Power BI Developer
- Data Analyst
- BI Analyst
- Business Analyst
💰 Salary (India)
- Fresher: ₹4 – 6 LPA
- Experience: ₹10 – 18+ LPA