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gonk exam, CS chapter 1 - Coggle Diagram
gonk exam
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OOP - classes, inheritance, encapsulation
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Encapsulation
Where technical details of methods or porperties are hidden within the object, and data can obly be changed by using the appropriate methods.
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Databases and SQL
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SQL
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INSERT INTO customers (name, country, city) VALUES ("Matt","England","London");
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ELECT name, cost FROM customers JOIN orders ON customers.id = order.customer_id;
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SELECT name, city FROM customers;
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