In the paper of Bigtable, it is represented with A Distributed Storage System for Structured Data.
I'm confused with the terms "structured data". I know that structured data so formal that the data is easily classified and searched.
How Nosql like Bigtable stores image data?
Cloud Bigtable has a binary key and binary values. (It also has families and qualifiers, but that's not too important for this question). There's also a 10MB size limit for values. If you have small images, then you can put the image in the Cell value. You can put other classification data in other cell values.