Persist does not require explicit mappings from POJOs to database tables.

It can, however, be instructed to map Java classes and fields to database tables and columns using annotations.

Persist will convert values returned from the query to Java types.

Keys in the table are the names of the columns returned in lower case.

Java primitive types If a query returns a single column, Persist can map data directly into primitive types (either single values or lists): Custom queries with no returning data Arbitrary queries that return no data can be easily executed.