In an interview for the DataStax blog, Philippe Modard, engineer and CTO at V2i:
The big difference over relational databases is the data model. Once we understood how things needed to be modeled and defined, everything else was a piece of cake.
Indeed NoSQL new data models are the first obstacles developers encounter when considering a NoSQL database. Some could think it’s about using new APIs, lacking a query language like SQL, or having to use a different one. But I don’t think these are the real causes.
The first time I’ve experienced the unfamiliarity of a new data model was back in 2005 when I’ve started using Jackrabbit JCR implementation (a hierarchical model). Then a couple years later I’ve had the same feeling when first using the Google App Engine data store.
It wasn’t about the new APIs though. And it wasn’t about the query languages either. For me it was about rethinking how I store and access data. It was striking to realize how used I was to think in terms of a relational model. Even if not everything I’ve implemented before was purely relational.
Looking at the various NoSQL databases around, you could see how those that started with a data model that felt closer to the relational model have seen faster adoption. And I don’t think the main reason behind it is better data models per se, but just familiarity.
Original title and link: NoSQL Data Models and Adoption ( ©myNoSQL)