A Java enum that is stored in database using 1 as first value, and 0 as no value.
In java a java.util.Date and in database 3 columns of integer type.
In java an Enum and in database a letter corresponding to the position in the string that it's in property 'letters'.
In java an Enum and in database a String corresponding to the position in the string that it's in property 'strings'.
Allows to remove null for strings on save and on load from database.
Stores a boolean value as 'S' or 'N' in database.
Supports Blob (and also other types for byte ) in as column type in DB.