Sergey - Database systems tutor - San Francisco

1^st lesson free

Sergey

4.9 (8 reviews)

Rate UGX 61,966
Response 8h
Students
Number of students Sergey has accompanied since arriving at Superprof
1
Number of students Sergey has accompanied since arriving at Superprof

4.9 (8 reviews)

UGX 61,966/hr

1^st lesson free

Database systems
MySQL
Data Analysis

Business Intelligence Analyst with 5+ years of SQL experience teaches practical SQL for all levels, from basic queries to advanced analytics.

Database systems
MySQL
Data Analysis

Lesson location

- Online

Super Prof

Sergey is one of our best Database systems tutors. They have a high-quality profile, verified qualifications, a quick response time, and great reviews from students!

About Sergey

I'm a Business Intelligence Analyst with 5+ years of hands-on experience working with SQL and data every day. I hold a degree in Computer Science from the French University in Armenia.

My career has covered several data roles. I started as a Database Analyst, then worked as a SQL Developer and Business Analyst. I now work as a BI Analyst at SoftConstruct, a large international tech company. My work includes writing complex queries, building data pipelines, designing dashboards, and turning raw data into business insights.

Because I use SQL professionally, I know which skills matter most in real jobs and interviews, and I focus my lessons on them. I explain concepts clearly, break difficult topics into simple steps, and adapt to each student's pace and goals.

I'm patient, organized, and reliable, and I enjoy helping people gain confidence with data. My goal is for you to leave each lesson able to write better queries on your own.

About the lesson

My SQL lessons are practical and built around real-world data, so you learn skills you can use right away at work, in your studies or in job interviews.

We start with a short assessment of your level and goals, then follow a structured, personalized plan. Beginners learn the foundations: SELECT, filtering, sorting, aggregations and joins. More advanced students work on subqueries, CTEs, window functions, query optimization and data modeling.

Every lesson is hands-on. You write queries yourself on realistic datasets, such as sales, customers and user activity, and I explain the logic behind each solution step by step. I also share how SQL is actually used in business intelligence, including building reports, analyzing KPIs and preparing data for dashboards.

I also help with SQL interview preparation, practice tasks and university assignments. Lessons are held online and adapted to your pace. After each session, you get exercises to practice and clear feedback to help you progress quickly and confidently.

Recommendations

Recommendations come from relatives, friends and acquaintances of the teacher

Zhor

Sergey, an old and treasured friend of mine, is incredibly patient and clever. His expertise in online teaching is unparalleled, making him highly recommended.
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Zhor
Sergey, an old and treasured friend of mine, is incredibly patient and clever. His expertise in online teaching is unparalleled, making him highly recommended.
T

Torosyan

Sergey has a unique talent for breaking down complex concepts into easily understandable terms. He is patient, approachable, and always willing to go the extra mile to ensure his students grasp the material fully. His clear explanations and practical examples have helped many students achieve a deeper understanding of SQL, which has significantly improved their academic performance and confidence.
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T
Torosyan
Sergey has a unique talent for breaking down complex concepts into easily understandable terms. He is patient, approachable, and always willing to go the extra mile to ensure his students grasp the material fully. His clear explanations and practical examples have helped many students achieve a deeper understanding of SQL, which has significantly improved their academic performance and confidence.
E

Erj

I am writing to highly recommend Sergey Begrakyan for a tutoring position. Over the past 1 year, Sergey has consistently demonstrated exceptional tutoring skills and a profound understanding of SQL and database management. His dedication to teaching and his ability to connect with students make him an outstanding tutor.
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E
Erj
I am writing to highly recommend Sergey Begrakyan for a tutoring position. Over the past 1 year, Sergey has consistently demonstrated exceptional tutoring skills and a profound understanding of SQL and database management. His dedication to teaching and his ability to connect with students make him an outstanding tutor.
L

Luiza

I am pleased to recommend Sergey as an outstanding tutor. Sergey’s dedication, expertise, and passion for teaching have had a profound impact on his students, and I am confident in his ability to inspire and empower learners of all levels.
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L
Luiza
I am pleased to recommend Sergey as an outstanding tutor. Sergey’s dedication, expertise, and passion for teaching have had a profound impact on his students, and I am confident in his ability to inspire and empower learners of all levels.
Taguhi

Sergey is an exceptional SQL developer and tutor, whose expertise and teaching methods have significantly benefited my learning experience.
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Taguhi
Sergey is an exceptional SQL developer and tutor, whose expertise and teaching methods have significantly benefited my learning experience.
G

Gohar

I highly recommend Sergey as a tutor for SQL and business intelligence. His expertise, teaching skills, and supportive approach make him an exceptional educator.
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G
Gohar
I highly recommend Sergey as a tutor for SQL and business intelligence. His expertise, teaching skills, and supportive approach make him an exceptional educator.
Valer

I had the pleasure of learning from Sergey, who is an outstanding SQL developer and tutor. His extensive knowledge and practical experience in the field made every lesson highly informative and relevant.
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Valer
I had the pleasure of learning from Sergey, who is an outstanding SQL developer and tutor. His extensive knowledge and practical experience in the field made every lesson highly informative and relevant.
A

Anie

Strong Educational Background, Practical Industry Experience, Proven Tutoring Experience
Read more

A
Anie
Strong Educational Background, Practical Industry Experience, Proven Tutoring Experience
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UGX 61,966

Pack prices

5h: UGX 305
10h: UGX 610

free lessons

The first free lesson with Sergey will allow you to get to know each other and clearly specify your needs for your next lessons.

online

UGX 61,966/hr

Business Intelligence Analyst with 5+ years of SQL experience teaches practical SQL for all levels, from basic queries to advanced analytics.

Lesson location

Super Prof

About Sergey

About the lesson

Recommendations

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free lessons

online

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Lesson location

Super Prof

About Sergey

About the lesson

Recommendations

Rates

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Pack prices

free lessons

online

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I am at your service with 25 years of experience in the area of computing, cell phones and tablets, administrative package, windows, internet, training at all levels, i specialize