...
- Entity variables. These are used to record persistent data about individuals interacting with rules. Entity variables are identified by the namespace
ent. KRL programs keep each user's persistent entity variables separate. KRL programs are multi-tenanted automatically. - Application variables. These are used to record persistent data about the application or rule set. Application variables are identified by the namespace
app.
Entity, application, and request variables share the same syntax and operations. They differ primarily in the scope of their definition. An analogy might help: Entity variables are similar to instance variables, and application variables are similar to class variables in object-oriented languages.
...