SQLite perguntas e respostas de entrevista
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Pergunta 11. Explain the difference between CHAR and VARCHAR in SQLite.
CHAR and VARCHAR are both text types, but CHAR always reserves space for the specified length, while VARCHAR only stores the actual data without padding.
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Pergunta 12. How to perform a SELECT query in SQLite?
To perform a SELECT query in SQLite, you can use the following syntax: `SELECT column1, column2 FROM table WHERE condition;`.
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Pergunta 13. What is the purpose of the INDEX in SQLite?
An INDEX in SQLite is used to improve the speed of data retrieval operations on a table.
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Pergunta 14. Explain the concept of ACID properties in database transactions.
ACID stands for Atomicity, Consistency, Isolation, and Durability. These properties ensure the reliability and integrity of database transactions.
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Pergunta 15. How to update data in a SQLite table?
You can update data in a SQLite table using the UPDATE statement, like this: `UPDATE table SET column1 = value1 WHERE condition;`.
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