The entities created are: blog, tag, and entry.
blog: field1: name (String) field2: handle (String)
relationship: many-to-one w/ user with "login" field
relationship: one-to-many w/ entry with "login" field
tag: field: name (String)
relationship: many-to-many w/ entry
entry: field1: title (String) field2: content (CLOB) field3: date (ZoneDateTime)
relationship: many-to-one w/ blog with "name" field
relationship: many-to-many w/ tag with "name" field