integer MODELS_NOT_NULL

integer MODELS_DATA_TYPES_NUMERIC

integer MODELS_NON_PRIMARY_KEY

public read (mixed $key) Reads metadata from Memcache

integer MODELS_PRIMARY_KEY

integer MODELS_DATA_TYPES_BIND

integer MODELS_ATTRIBUTES

integer MODELS_DEFAULT_VALUES

public write (mixed $key, mixed $data) Writes the metadata to Memcache

integer MODELS_DATE_AT