Talking head
Ruby Conference 2011

This presentation, by Piotr Szotkowski, is licensed under a Creative Commons Attribution ShareAlike 3.0

Entities and their relations are the backbone of many Ruby applications – from trivial, one-off commandline utilities to full-blown social network websites. The good old relational databases, while showing extreme abilities in both adaptation and survival, are no longer the obvious choice for persistence – and sometimes obviously not an ideal one. This talk discusses various entity/relation modelling approaches and different persistence techniques – from rigid schemas in suits to collections of hippie free-form documents; from good old (transactional!) PStore through join-table-happy RDBMSes and muscle-flexing NoSQL hools to (social!) graph databases, waiting patiently for broader recognition and prime time. Quite a few interesting Ruby libraries for gluing all this together are also pondered upon – from world-class champions like Active Record or ARel to less known gems like Candy and Ambition.

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