Talking to Databases with SQL
Like Duolingo, but for Talking to Databases with SQL. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free forever · No credit card · iPhone & Android
Key ideas in Talking to Databases with SQL
- Databases handle concurrent access from multiple users better than spreadsheets
- Relational databases enforce data integrity through strict schemas
- Tables are composed of rows and columns
- Primary keys ensure each record is unique
- SQL is a declarative language that asks for 'what' data is needed, not 'how' to find it physically
- The Database Management System (DBMS) handles the physical file browsing
- Relational databases use keys to connect tables
- Data is stored in separate tables to reduce redundancy
- The fundamental difference in data integrity and scale between spreadsheets and databases
- The core components of a relational database structure
- SQL allows for complex filtering and joining of data from multiple sources
- SQL provides a standardized way to interact with different database systems
- The advantages of using SQL for data management over manual file browsing
- The role of SQL as a declarative language for data retrieval
- The concept of relationships between data entities
- Rows represent individual items (records)
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Talking to Databases with SQL the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Why would a global team choose a database instead of a shared spreadsheet for tracking live inventory?
Get it right to open this lesson and 53 more in the app.
Where Talking to Databases with SQL takes you
Learn how to store, find, and organize information using SQL. This course takes you from your very first query to joining complex tables like a pro.
- 1
Getting Started with Data
- What is a Database?
- Looking at Your First Table
- Picking Specific Columns
- Giving Columns New Names
- 2
Finding Exactly What You Need
- Filtering with Where
- Matching Text Patterns
- Working with Numbers
- Checking Multiple Conditions
- Sorting Your Results
- Limiting the Number of Rows
- 3
Summarizing Information
- Counting Your Data
- Finding Averages and Totals
- Grouping Similar Items
- 4
Connecting Different Tables
- How Tables Link Together
- Combining Two Tables
- Handling Missing Matches
- Joining Three or More Tables
- The Big Data Review
4 sections · 18 units · 54 levels. Built to play, not to enroll.
You pick the voice
Talking to Databases with SQL is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Talking to Databases with SQL today.
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