find() public abstract static method Creates an

update() public abstract method Saves the changes to this

isPrimaryKey() public abstract static method Returns a

equals() public abstract method Returns a value indicating

attributes() public abstract method Returns the list of

insert() public abstract method Inserts the record into

getPrimaryKey() public abstract method Returns the primary

hasAttribute() public abstract method Returns a value

getDb() public abstract static method Returns the connection

unlink() public abstract method Destroys the relationship