"so welcome to the track on nosql databases although it seems like we've already had a couple of tracks on nosql databases um my name is Martin Fowler um stenosi has hosted the track he asked me to kic..."

"going to talk a little bit about the history of nosql databases because as if with many things to understand why something is the way it is it's useful to know how on Earth it got there in the first p..."

"complete dominance of certainly the Enterprise data space and plenty of other ones as well I mean we saw with the the science work at the large hon collider they didn't really want to use relational d..."

"movement now it's important at this point to talk a little bit about where this term nosql comes from a lot of people complain about it quite reasonably because they say well it's a really odd term tr..."

"writing a book about the subject if you it's important if you're going to write a book about about something to Define what it is you're writing about my conclusion is we cannot Define no SQL database..."

"models a little bit more so the most simple data model to talk about is that of the key Value Store the basic idea is you have a key you go to the database tell me grab me the value of this key the da..."

"here now it by having the no fixed storage schema does give you some options that you don't get with relational databases and and there is a difference and there are advantages in terms of flexibiliti..."

"on what is important though is that both key value and document databases have this common notion of you're taking some complex structure that you can save as a single unit into the database whether i..."

"picture so the great thing about this is that now when you're taking your aggregate in memory instead of spreading it across lots of individual records you get to store the whole thing in the database..."

"to cover some of these models I've basically taken the document column family and key value and lumped them together under this aggregate oriented category and I think that's a useful abstraction at l..."

"relational approach so no SQL divides into those two c categories all of these are schemes so the graph databases as well allow you to add any bits of data to any node you have all that flexibility bu..."

"kind of what really matters but there's also a bit more to thinking about consistency even than that because even in a relational World acid transactions don't mean we get to be completely consistent ..."

"probably have you'll probably also know how to solve this and basically use a technique which uh in one of my previous books I referred to as an offline lock um basically what that means the usual way..."

"same another thing however that's common to do with clusters of machines is to replicate data to put the same piece of data in lots of places this can be advantageous in terms of performance because n..."

"sorry we can't accept any orders at the moment which is kind of bad for business this is one of the things that drove Dynamo they wanted to make sure that the shopping cart was always available you co..."

"choice so this then ties into something you'll hear endlessly about whenever someone talks about this stuff which is the cap theorem everybody who's heard of the cap theorem how many people understand..."

"where we make these tradeoffs and if you want more um well I'm going to tell you to buy my book anyway so you know what to do okay so the last little segment I'm going to talk a bit about when and why..."

"databases because you've got you get get effectively getting rid of that impedance mismatch problem now of course that raises a question that was of course the promise of object databases they were go..."

"for no SQL databases to thrive that this is a good practice anyway even if you got relational databases you do not want to be integrating through integration databases that cause no end of trouble bel..."

"given a big advantage to the the Amazon because they're able to mine all this information so with all of this does this mean that no SQL is is the future of databases that relational databases are goi..."

"you got to deal with organizational issues relational dbas are not going to like this in fact for some people that's a big Advantage but let's not go there no SQL databases are immature they don't hav..."