Career Advice
Get practical guidance on career growth, job search, interviews, CV improvement, and the next steps in your professional path.
What you'll gain
✓ Free consultation · Certificate on completion · Practical learning
Duration
2 months
Format
Offline
Starts
Oct 29, 2026
Certificate
On completion
Lessons
16 lessons
Price
59,000 AMD / month
Schedule
Admission to the course is based on an interview and a test.
The BDG ecosystem
At BDG, learning continues beyond lessons. You get access to guidance, community, events, spaces, and resources that support your professional growth.
Get practical guidance on career growth, job search, interviews, CV improvement, and the next steps in your professional path.
Learn how to present your skills, build professional visibility, and create a stronger personal brand in your field.
Join free webinars, seminars, and open sessions every month to keep learning, meet experts, and discover new opportunities.
Become part of a large professional community of students, graduates, trainers, and industry specialists.
Use BDG spaces for learning, networking, teamwork, and focused work when you need the right environment to grow.
Access useful books, materials, guides, and learning resources selected to support your development.
Professionals working with big data are often faced with the problem of effectively performing their analysis. This course is specifically tailored for those professionals who aim to enhance their database analysis capabilities and gain expertise in SQL.
SQL serves as the universal language for managing databases, allowing users to insert, search, update, and delete records within a database. Beyond these fundamental tasks, SQL is also instrumental in optimizing and maintaining databases.
SQL finds extensive applications across diverse industries, including ticketing, banking, social media, data sharing, e-commerce, and more. Consequently, there is a broad array of career prospects available for individuals who specialize in SQL.
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For beginners
The course is designed for anyone who plans to work with databases and learn SQL.
Tech sphere professionals
For data analysts, business analysts, programmers, and system administrators who work with big data.
What is a Database? — Definition,Meaning, Types, Example
Describing the fundamental building blocks: tables, columns, primary keys, and foreign keys
DatabaseDesign Tutorial— Learn Data Modeling
What is Normalization?— 1NF, 2NF, 3NF Database Example
What is ER Modeling? — Learn with Example
Building tables with CREATE TABLE
Modifying table structure with ALTER TABLE
Adding columns to an existing table
Removing tables with DROP TABLE
Protecting data integrity with constraints
Guaranteeing uniqueness with primary key constraints
Enforcing integrity with foreign key constraints
Imposing business rules with check constraints
Improving performance with indexes
Adding table rows with INSERT
Changing row content with UPDATE
Removing rows with DELETE
Controlling transaction with COMMIT and ROLLBACK
Truncate
Difference between DELETE and Truncate
Retrieving data with SELECT
Specifying column expressions
Sorting the result with ORDER BY - DESC & ASC Query with EXAMPLE
HandlingNULL values in expressions
Restricting rows with the WHERE filter AND, OR, IN, NOT IN Query
Example
Testing for equality or inequality
Applying Wildcard characters — Like, NOT Like, Escape, ( % ), ( _ )
AvoidingNULL value pitfalls- IS NULL & IS NOT NULL Tutorial
LIMIT & OFFSET — Learn with Example
Conditional formatting with the CASE expression
Utilizing the CASE expression to simulate IF tests
Dealing with NULL values
Summarizing data using SUM, AVG and COUNT
Finding the highest/lowest values with MAX and MIN
Defining the summary level with GROUP BY
Applying filter conditions with HAVING
Matching related rows with INNER JOIN
Including non matched rows with OUTER JOIN
Creating a Cartesian product with CROSS JOIN
Stacking results with UNION
Identifying matching rows with INTERSECT
Utilizing MINUS to find non matching rows
Testing the existence of rows
Placing subqueries in the column list
Creating complex expressions containing subqueries
Selecting data from a query result set
Using subqueries in the FROM clause
Introduction to single row functions
Character Functions
Conversion Functions
Date Functions
Numeric Functions
Introduction to Analytic functions
Syntax for Analytic functions
the Partition Clause
Order By Clause
Row number Functions
Rank Function
Dense_rank Function
Lag Function
ListAgg Function
Lead Function
First and Last Functions
Secure your place and take the next step in your professional growth.
Data Engineer
Andranik Silanyan has been working in the IT field for more than 15 years in analysis, design, and business application development teams as a Database Developer.
Each course is labelled beginner, intermediate or advanced. If you are unsure, book a free consultation and we will help you choose.
Flexible payment options are available for most programs. Contact us to discuss the right plan for you.
We mostly hold trainings with a Project Based Learning approach. Thanks to this approach, the students gain practical knowledge and develop their proficiency in the most efficient way.
After each training the students pass exams. Thus, both students and trainers have the opportunity to clearly assess the effectiveness of the training. Based on the results of the exams the students get certificates.
Upon completion of the training we give certificates to our students. Moreover, those whose performance is above 80% receive certificates of excellence.
We have developed a partner network that includes current best employers. In cooperation with them we do our best to assist our students in finding jobs. This network also helps us to organise internships for our students after the trainings.
Payment for the courses is made after the first lesson until the second lesson, in cash or by transfer. Payment for each stage is made for a fixed amount of 8 lessons.
Our courses are held in 2 main formats: online and offline. We believe that maintaining the format is very important for the effectiveness of the course.
BDG classrooms are technically equipped, and if necessary, we also provide students with laptops.
There is a break during each course, during which you can have a coffee and tea break.
HR consulting is carried out with our Career Development Specialist. With him, you can discuss your CVs, make corrections and finalize them, ready to apply for jobs.
All course materials, including recordings, books provided by trainers and other educational materials, are constantly available to our students during the course.
Individual courses are not currently designed, based on market needs and demands. During group courses, participants are also actively involved in teamwork, develop their communication skills, and learn to work in a team.
There is no age limit as such, as we value the spread of education to all age groups. It is especially important for us that people who already have experience and knowledge and want to acquire a new profession also go into a new educational direction.
Admission to each course is carried out through an interview or a test, or both at the same time. The choice of admission method depends on the requirements and specifics of the course.
We provide technical support to all our students related to the operational work of computers, as well as technical issues. The support is provided by our employee within the framework of the course.
Our team is in constant contact with students to provide the information you need, if necessary.
Certificates
Depending on the course format and results, students can receive one of BDG's certificate types.
Co-branded
For students who actively participate in the course learning process.
For active participationFor students who complete the course requirements and finish the program.
For successful completionFor students who complete the course with outstanding results and strong performance.
With distinctionA co-branded certificate for selected HR and partner-certified programs.
Co-brandedData Science
Book a free consultation and reserve your place in the next cohort.
2 months · Starts — Oct 29, 2026
57% booked
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