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Rajesh Umraoโ€’Data&AI
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I simplify the complex world of ๐ƒ๐š๐ญ๐š ๐€๐ง๐š๐ฅ๐ฒ๐ญ๐ข๐œ๐ฌ, ๐ƒ๐š๐ญ๐š ๐’๐œ๐ข๐ž๐ง๐œ๐ž into bite-sized, actionable insights.
On this channel, you'll learn SQL, Python, Power BI, ETL, Data Visualization, and interview preparation through practical examples, real-world business scenarios, and hands-on projects.
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๐Ÿง‘๐Ÿผโ€๐Ÿ’ผแ—ฉแ—ทOแ‘ŒT แ—ฐE:
Hey, Iโ€™m Rajeshโ€” ๐’๐ž๐ง๐ข๐จ๐ซ ๐€๐ง๐š๐ฅ๐ฒ๐ฌ๐ญ and proud ๐๐ˆ๐“ ๐‡๐š๐ฆ๐ข๐ซ๐ฉ๐ฎ๐ซ(๐‡๐) alumnus.
๐‹๐ข๐ง๐ค๐ž๐๐ˆ๐ง: www.linkedin.com/in/rajeshumrao/
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๐Ÿ”๐–๐‡๐€๐“ ๐˜๐Ž๐”'๐ฅ๐ฅ ๐„๐—๐๐‹๐Ž๐‘๐„:
โ‘ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ & ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ: SQL, Python, Power Bi and more
โ‘ก๐— ๐—ฎ๐—ฐ๐—ต๐—ถ๐—ป๐—ฒ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด & ๐—”๐—œ: ML, AI, Algorithms, Deep Learning
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Rajesh Umraoโ€’Data&AI

Why are slowly changing dimensions(SCD) important in data warehousing?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

1 day ago | [YT] | 4

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Rajesh Umraoโ€’Data&AI

What is the main purpose of dimensional modeling in data warehousing?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

2 days ago | [YT] | 19

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Rajesh Umraoโ€’Data&AI

Why is "one source of truth" important in analytics?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

4 days ago | [YT] | 16

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Rajesh Umraoโ€’Data&AI

Why can a perfectly valid SQL query still produce incorrect business results?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

5 days ago | [YT] | 27

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Rajesh Umraoโ€’Data&AI

Which database design principle aims to make invalid data impossible to store?

6 days ago | [YT] | 9

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Rajesh Umraoโ€’Data&AI

Why is data lineage important for analytics teams?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

1 week ago | [YT] | 16

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Rajesh Umraoโ€’Data&AI

Which SQL concept is most important when designing reports?

1 week ago | [YT] | 12

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Rajesh Umraoโ€’Data&AI

In SQL,Why can SUM() after a JOIN produce incorrect results?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

1 week ago | [YT] | 19

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Rajesh Umraoโ€’Data&AI

What is the purpose of a junction table?
(๐˜—๐˜ญ๐˜ด ๐˜“๐˜๐˜’๐˜Œ ๐˜ต๐˜ฉ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ต)

1 week ago | [YT] | 24

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Rajesh Umraoโ€’Data&AI

Why can a query with fewer rows sometimes run slower than one with more rows?

1 week ago | [YT] | 9

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