Quick study sessions to strengthen memory and retain key concepts.
What makes PreparedStatement safer than Statement?
It prevents SQL injection. Frame the concept in practical terms so you can explain it during interview discussion.…
View Card →How can you ensure a ResultSet is closed even if an exception occurs?
Use try-with-resources or finally block. Frame the concept in practical terms so you can explain it during interview…
View Card →Why is it risky to use rs.getString() for non-string columns?
It can lead to type mismatch errors. Frame the concept in practical terms so you can explain it…
View Card →What are potential issues with not closing a ResultSet?
Unclosed ResultSets can cause resource leaks. If a ResultSet is not closed after use, it can lead to…
View Card →What is manual Object-Relational Mapping in JDBC?
Manually map ResultSet data to Java objects. Manual ORM involves converting rows from a ResultSet into Java objects,…
View Card →How do you move the cursor to the next row in a ResultSet?
Use the rs.next() method. Frame the concept in practical terms so you can explain it during interview discussion.…
View Card →Why do teams use PreparedStatement over Statement in production code?
It prevents SQL injection and allows query pre-compilation. PreparedStatement is preferred over Statement because it provides protection against…
View Card →How do you handle SQLExceptions when closing a ResultSet?
Log the exception and ensure the ResultSet is closed. When closing a ResultSet, if a SQLException occurs, it's…
View Card →What issues arise from using rs.getString() for all column types?
It risks data type mismatches and runtime errors. Using rs.getString() for all column types can lead to type…
View Card →What happens if you fail to close a ResultSet?
It can lead to resource leaks and exhausted database connections. Not closing a ResultSet can cause resource leaks,…
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