Let's begin with Spring Batch Framework

Configure the project with spring batch dependencies, including the spring boot starter batch that pulls in core and infrastructure libraries, plus the test library; verify the build.

Configure a Spring Batch step with the step builder factory, defining a reader, processor, and writer, and implement a simple tasklet that prints hello world, and chunk oriented processing.

Launch a spring batch job via a rest controller at /job, wiring the job launcher and parameters, including a CSV file name for validation and successful execution feedback.

Update the step for chunking in Spring Batch by adding an item reader, processor, and writer. Configure a chunk size of 2 and adapt the job step and batch configuration.

Unit test an item processor in a batch job by applying its Java function to a patient record, producing a patient entity, and verifying results with assertions and step-scoped listeners.

Define the patient database schema by adding a liquibase changelog that maps table columns to the patient entity, update the master changelog, and verify the changes load correctly.