The Inca scribes (known as armantus) used the quipu (knotted ropes) to record and store information about the immense holdings of the vast Inca empire.
印加抄写员们利用结绳文字记载辽阔印加帝国大量财产的资料。
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MetaModel is used in applications such as the data ware house generation system Quipu, and the open source data profiling application DataCleaner which also denotes a project of eobjects.org.