Practice Resultset Interface (19.7) - Database Connectivity (e.g., JDBC)

Practice: ResultSet Interface

Lesson 19.7Database Connectivity (e.g., JDBC)

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8 questions

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Exercise
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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 does the next() method in ResultSet do?
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Think about moving through rows one by one.
Question 2.
Is getString() used to retrieve integer values?
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Consider the name of the method and the data type.
3Question 3.
What is the purpose of the ResultSet interface in JDBC?
- To execute SQL statements
- To process data retrieved from database queries
- To establish database connections
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Think about where we work with data from queries.
4Question 4.
True or False: The method next() moves the cursor in the ResultSet to the previous row.
- True
- False
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Consider the direction of the cursor movement.
Question 5.
Write a complete JDBC program that retrieves student data using ResultSet and handles potential exceptions.
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Use try-with-resources for automatically closing resources.
Question 6.
Suppose a student table has a column called 'email' that should be string but is being accessed with getInt(). Write a code snippet that would handle the exception appropriately.
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Always anticipate possible exceptions, especially when accessing columns with the wrong data type.

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