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Fowler
and implemented them as a Ruby library that he also called Active Record.
?– Note Since both the design pattern and the Ruby library are called Active Record, it can quickly become
confusing which we??™re referring to throughout this book. Since the majority of this book is specifically written
for and about the Active Record library for Ruby, when we refer to something as simply ???Active Record,???
we mean the Active Record library for Ruby. Therefore, when we refer to the Active Record design pattern,
we will use the full label ???Active Record design pattern.???
When DHH released the Rails framework to the public, Active Record was part of the core
bundle, and it??™s now also available as its own Ruby gem.
As is often the case with open source projects, once the initial library was out there, a number
of Ruby and Rails contributors took it upon themselves to take the next step so that the library
could be used with almost all of the popular database applications. They did this by developing
various database-specific adapters for Active Record.


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