Quick study sessions to strengthen memory and retain key concepts.
What does disabling auto-commit mode in JDBC achieve?
It allows manual control over transactions. Disabling auto-commit mode in JDBC gives you the power to control when…
View Card →How does JDBC handle transaction boundaries?
JDBC uses commit() and rollback() methods to explicitly manage transaction boundaries. JDBC requires you to explicitly define transaction…
View Card →What design considerations should you make for JDBC transactions in a high-concurrency environment?
Balancing isolation levels with concurrency needs is key to maintaining performance and data integrity. In high-concurrency systems, choosing…
View Card →Why do teams use transactions in JDBC for e-commerce operations in production code?
Transactions ensure that all related operations succeed or fail together, maintaining data integrity. By grouping related database operations…
View Card →Why might an exception occur when using transactions in JDBC?
Exceptions can occur due to SQL errors, connection issues, or logic errors in transaction handling. Exceptions in JDBC…
View Card →How do isolation levels affect transaction performance in JDBC?
Higher isolation levels can decrease performance due to increased locking and reduced concurrency. Isolation levels like READ COMMITTED…
View Card →What happens when auto-commit mode is enabled in JDBC?
Each SQL statement is treated as a separate transaction and committed immediately. With auto-commit enabled, every individual SQL…
View Card →What are isolation levels in JDBC and why are they important?
Isolation levels define the degree to which the operations in one transaction are isolated from those in other…
View Card →When should you use PreparedStatement over Statement in JDBC?
PreparedStatement should be used for parameterized queries to prevent SQL injection and improve performance. PreparedStatement pre-compiles SQL queries…
View Card →How would you explain a database transaction in JDBC in an interview?
A transaction is a sequence of operations treated as a single unit. In JDBC, a transaction ensures that…
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