Data at Your Fingertips

Understand the structure. Extract what matters. Create reports that speak louder than words

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Less Noise — More Insight

We create courses that simplify rather than complicate. At the core are practical queries that help you find what matters, combine data, and build meaningful reports. Our goal is to make SQL feel logical and clear — without chaos or confusion.

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Questions Worth Asking

What course should I choose if I’ve never used SQL before?

If you're just starting out, we recommend beginning with the Startline Course. They're designed for those who have never written a query and want to understand how data extraction works. Each course follows a clear progression, helping you move from simple concepts to more complex ones.

Can I ask questions if something is unclear during the course?

Yes, we’re always here. If you encounter any difficulties or confusion while going through the course materials, feel free to reach out via email. We’ll help you understand the topic and provide clarification.

Are these courses suitable for someone who works with tables?

Absolutely. If you deal with tables regularly but haven’t worked with structured queries before, our courses will help you organize data, automate reporting, and reduce manual work.

Do I need a technical background to take the course?

No, a technical background is not required. The materials are created for a broad audience and are explained in simple terms. You can start without prior experience in IT.

Those Who Speak SQL Fluently

We’re a team of analysts and instructors bringing real-world experience into clean, practical courses

Cassian Monroe

SQL Query Builder

Cassian works on building precise structured queries used in business analytics. Has a deep understanding of how to link tables to get clear results. Explains complex things in
simple language.

Orion Hale

Data Structure Analyst

Orion specializes in building queries for large tables and optimizing information retrieval. He has experience working with internal company systems and has a good understanding of reporting logic. He works on projects where a clear data structure is required.

From Queries to Clarity

We’re a team of specialists who work with databases and queries every day. Dattafolio started as an internal idea — to create clear explanations for what often looks like complex code. We collected what matters most, removed the noise, and focused on what truly helps you navigate tables, conditions, and reports.

  • Clear Query

    We explain how to write precise queries without extra
    noise.

  • Real Examples

    The course uses tasks similar to those you face in everyday
    work.

  • Calm Pace

    The material flows in a way that avoids information
    overload.

  • Logical Build

    Each section is carefully structured to follow the previous
    one — no jumps or confusion.