APersist is another ORM-Framework for Android Apps.
For a simple example see: APersist - Easy annotate and persist
#Annotations
@PersistenceClass - use to mark a class as entity-class
@Table - use to specify the name of a table for an entity-class
@Id - use to mark the id-field
@Column - use to mark a field as usual column
@ToOne - use to mark a field as a to-zero-or-one-relation
@ToOneOrNone - use to mark a field as a to-one-relation
@ToMany - use to mark a field as a to-zero-or-Many-relation