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Any time you put data somewhere, organize it and give it an interface for efficient retrieval you have a database. Game state, generic data structures and practically an organization of data in software can be thought of the same way, so this is not exactly any sort of revelation.

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The thing about a "database", relative to any other assembly of data, is that it typically has a universal query system whose particulars are not dependent on the schema of the data you're querying over. This is pretty much the focus of this article.

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