Is there a specific naming convention for the external database? The example doesn't seem to follow the convention (Data-Admin-DB-Table). The documents specify the Data and Work classes, but I can't get it to work.
I do not have the class. I did expect the wizard to create the class. The tutorial I am following doesn't mention classes and when to create them. I get an error if I go to sysadmin > class > create. What do I need to do to specify a new base class, and when should I create one?
In the document you follow its guiding for Pega exercise system application and do have a specific class . For your application you should create your own class if you need to use it. If you just want to try out, why not use the mentioned developer exercise system so all the classes is already in built.
...And related to your class create error. You are using Pega PRPC application which is consists with Locked rulesets. Without an unlocked ruleset you cannot create a class. Simply you should let the PRPC application as it is but create your own application on top of Pega.
Since you are new to Pega I think you should understand how Pega applications work and follow the Pega System Architect Essentials course . This will help you to understand the Pega Architecture and the use of it and more importantly..How to use it .