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Clapham: A railroad diagram generator

I don't work with the Oracle database very much anymore, and one thing I miss is their server documentation. I still have my old copy of the Oracle 7.3 SQL Language Reference, and sometimes I reach for it when the SQL:2008 standard has fuddled my brain and I want to be reassured that SQL can be simple, powerful and trustworthy. The calming effect is partly due to the authoritative tone, but the railroad diagrams describing the syntax of each command say 'Don't worry'.

For example, here is Oracle 10.2's CREATE TABLE:



Yes, railroad diagrams. You can easily get lost in …

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