Practice Best Practices In Jdbc (19.13) - Database Connectivity (e.g., JDBC)

Practice: Best Practices in JDBC

Lesson 19.13Database Connectivity (e.g., JDBC)

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8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the purpose of using PreparedStatement in JDBC?
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Think about how it deals with user inputs.
Question 2.
What should you always do after executing a database operation?
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Why is this important for the application?
3Question 3.
What is the main advantage of using PreparedStatement over Statement?
- Prevent SQL injection
- Simpler syntax
- Faster execution
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Consider security vs. ease of use.
4Question 4.
True or False: Connection pooling decreases the load on the database.
- True
- False
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Think about how many connections you open per user.
Question 5.
You are tasked to refactor a legacy Java application that uses raw SQL queries with Statement. Implement the necessary changes to secure it using PreparedStatement.
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Remember to replace concatenated inputs with placeholders.
Question 6.
Design a simple application that connects to a database and implements connection pooling using HikariCP. Describe your implementation steps.
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Think about what properties are needed for HikariCP setup.

4 more questions in this section. Enroll free to practise them all.