Relational databases and SQL
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Relational databases and SQL
A relational database organizes data into tables with rows and columns.
Why relational?
- Data lives in one place, structured
- Tables connect through keys
- SQL asks questions about it
SELECT name FROM customers WHERE city = 'Kochi';
| Term | Meaning |
|---|---|
| Table | A set of rows sharing columns |
| Row | One record |
| Key | What connects tables |
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