ISO 19126:2009规定了要作为寄存器建立和管理的特征概念词典的模式。它不指定功能目录的模式或将功能目录作为寄存器进行管理。但是，由于功能目录通常来自特征概念词典，因此ISO 19126:2009确实为特征概念词典和特征目录的分层寄存器指定了一个模式。这些寄存器符合ISO 19135标准

ISO 19126:2009 specifies a schema for feature concept dictionaries to be established and managed as registers. It does not specify schemas for feature catalogues or for the management of feature catalogues as registers. However, because feature catalogue are often derived from feature concept dictionaries, ISO 19126:2009 does specify a schema for a hierarchical register of feature concept dictionaries and feature catalogues. These registers are in accordance with ISO 19135.