Nosql

SQL gabriele lana gabriele.lana@cleancode.it twitter: @gabrielelana http://joind.in/2938

SQL I’am going to tell you what is this thing...

SQL is not about rejecting sql/relational databases

SQL is not about embracing non sql/ non relational databases

then what is this all about? let me tell you a story...

Hype cycle of technology peak of inflated expectationVisibility productivity disillusionment obsolescence technology trigger maturity

Hype cycle of technology disillusionment leads to technology triggerVisibility maturity

but sometimes they come backVisibility maturity

volume => longevity (legacy)Visibility maturity

new ideasare made of old ideas applied ina different context

an example

an example ??? probably something in between

All of this has happenedbefore, and it will all happen again...

ok, but this is thenosql day! what are you trying to say? we should startfrom the beginning...

dbms: the beginning business storage ui • single user • data owned by applications • custom solution

dbms: the beginning business storage ui • every applications needs to develop his own solution...

dbms: first libraries business library ui • more robust solution

dbms: first libraries (navigational databases) FirstNode.SecondNode.attribute attribute FirstNode attribute SecondNode

dbms: first libraries (navigational databases) FirstNode.SecondNode.attribute attribute FirstNode attribute SecondNode • cobol: banking • m/mumps: health care

dbms: first libraries (key value databases) attribute RecordKey attribute RecordKey attribute RecordKey attributedKey

dbms: first libraries (key value databases) attribute RecordKey attribute RecordKey attribute RecordKey • dbm: ken thompson -> QDBM -> tokyo cabinet

dbms: relational model rdbms business network • system-r • ingres -> application postgres application • sybase • informix application

dbms: relational model rdbms business network duplicated business logic application who is the application data’s owner? application

t ed object en r i r . o oriented lumn el co at t tim n io e d e m te value (m u nnet n rt . g/ c e al rr o i wo d) d r rk -> o ap/a d) nav (ld y i ga e tio k n al -

dbms: relational server business rdbms • consistency application • security • integrity application • validity application

dbms: relational server business rdbms relational model as a (declaratively) application programmable business logic application rise the data driven design application

impedance mismatch

contextpurpose cost of implementation

dbms: relational model rdbms business network duplicated business logic application who is the application data’s owner? application

dbms: service oriented application application application network

dbms: service oriented application ROA: an architectural application style where applications are responsible to deliver a service to network the network (aka users and other applications)

SQL is not about rejecting sql/relational databases

SQL is about rejecting the notion that there is one true and centralized way to store any kind of data

what about the future? storage for more specific data

what about the future? knowledge extraction

what about the future? “REAL” relational databases

Questions?

Nosql

by Gabriele Lana on Mar 27, 2011

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Nosql — Presentation Transcript