Summary

In this chapter, we talked about making a connection to databases using Java and, once that connection is established, we talked about creating objects and inserting/updating/deleting data from the objects with simple examples, which helps you understand easily and write the required Java code. We covered not only simple executions but also catching exceptions when code fails to run, which gives you a hint to further troubleshooting. We also talked about prepared statements, which reduce the overhead of parsing/planning on the server, and loading the data using COPY, which is a faster way to load data in PostgreSQL.