There are times when you just need a quick database loaded with test data and don't want to persist, set up, or install anything. Well, this is where the in-memory mode of the H2 database engine can come in handy (http://www.h2database.com/)!
Before using the H2 database, we need to download its JAR and add it to SoapUI's classpath. You can get the latest H2 JAR from http://mvnrepository.com/artifact/com.h2database/h2/ (I took version 1.4.181). Then, add it to <SoapUI Installation Directory>/java/app/bin/ext/.
You'll also need some headed CSV data. Amazingly, the script might be able to handle any valid CSV structure (see http://www.h2database.com/html/functions.html#csvread). We'll use a simple invoice example invoices_with_headers.csv that can be found in the chapter 2 samples.
I have provided a completed SoapUI project GroovyInMemoryDB-soapui-project.xml in the Chapter2 samples.