How Does A Relational Database Work —
It sounds basic, but this article elegantly dives into the performance of various data structures behind databases, shows how relational databases perform under the hood, and even goes into query parsers, optimizers, and locking strategies.
Coding Geek tutorial
ORMs Under The Hood —
A look at what ORMs (Object Relational Mappers) are, what they offer, their relationship to SQL, and a summary of the arguments for and against using them.
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