Instead of traditional file processing, HBase makes database tables the input and output form for MapReduce processing.

代替传统的文件处理，HBase使数据库将MapReduce处理的输入和输出格式列表。

youdao

That's not to say that it is impossible to store complex data in a flat-file database; just that doing so can be more costly in time and processing power compared to a relational database.

这不是说用平面文件数据库不能存储复杂数据，而是若这样做要比用关系型数据库耗用更多的时间和处理能力。

youdao