TCS Power BI Developer Interview Questions, Process, and Tips

Q1. Experience , skills
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Q2. Study, back ground
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Q3. Any gap on work experience
Ans. 
No gaps in work experience
• I have consistently worked in the field of Power BI development without any breaks

• I have continuously improved my skills and knowledge through various projects and trainings
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Q4. Any gap on study
Ans. 
No gaps in study
• I have consistently pursued relevant courses and certifications

• I regularly attend workshops and webinars to stay updated on industry trends

• I actively participate in online forums and communities to exchange knowledge and ideas
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Q5. Family background
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Q1. Difference between import and direct query
Ans. 
Import brings data into Power BI for processing, while direct query connects to data source live for real-time analysis.
• Import: Data is imported into Power BI for processing and analysis.

• Direct Query: Connects to data source live for real-time analysis without importing data.

• Import is suitable for smaller datasets, while direct query is better for large datasets or real-time analysis.

• Imported data is stored in Power BI...read more
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Q1. Types of Joins in Power Query editor.
Ans. 
There are four types of joins in Power Query editor: Inner Join, Left Outer Join, Right Outer Join, and Full Outer Join.
• Inner Join combines rows from two tables based on a matching column.

• Left Outer Join returns all rows from the left table and the matching rows from the right table.

• Right Outer Join returns all rows from the right table and the matching rows from the left table.

• Full Outer Join returns all rows from bot
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Q2. Types of transformations performed in Power QUERY EDITOR
Ans. 
Power Query Editor allows various transformations on data such as filtering, sorting, merging, splitting, and aggregating.
• Filtering: Removing rows based on certain criteria.

• Sorting: Arranging rows in a specific order.

• Merging: Combining multiple tables or queries into one.

• Splitting: Dividing a column into multiple columns.

• Aggregating: Calculating summary statistics like sum, average, count, etc.
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Power BI and SQL Coding

Q1. Salary discussion ........ TCS offer very low salary as per market standards
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Q2. Normal Question like your family background
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Q3. SQL and PLSQL Question
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Q4. BI Question for RLS
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Q5. MS Azure automation Question
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