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NoSQL Meets Bitcoin and Brings Down Two Exchanges: The Story of Flexcoin and Poloniex
(hackingdistributed.com)
Q: What happens when you can't design a composable query language? A: You get MongoDB, with 3 bad query languages that still can't do ad hoc queries over JSON.
Introduction to ORM (Object Relational Mapping) models and a beginning example of how to construct models. This is intended for those who are not familiar with ORMs. In a later video, I will show how to use ActiveRecord, the ORM commonly used in Rails.
Catena is a distributed database based on a blockchain, accessible using SQL. Catena timestamps database transactions (SQL) in a decentralized way between nodes that do not or cannot trust each other. A Catena blockchain contains SQL transactions that, when executed in order, lead to the agreed-upon...