SQL for Java Devs – Page 12 – Sharp: NCLEX, Java & Python

Java: JOINs

How would you explain a LEFT JOIN, and when should you use it in an interview?

How do JOIN operations affect the shape of the result set?

What are some trade-offs when using complex SQL JOINs in large datasets?

How would you map a one-to-many relationship in Java using JDBC?

What are the design consequences of using JOINs in application logic?

How do you safely insert parameter values into a SQL query using JDBC?

How would you explain an OUTER JOIN, and how does it differ from INNER JOIN in an interview?

How can you execute a SQL SELECT query and retrieve data using JDBC?

How can transactions ensure data integrity when using JDBC for database updates?

How can JDBC transactions ensure data integrity during concurrent updates?