Connecting to a database

connect-to-database.txt

application input: HttpInput (HTTP request body)             
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+--> wrap-json-body: Hash Map                                
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     +--> post-notes-handler: Hash Map                   
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          +--> validate-note: [Hash Map, Error String]       
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               +--> create-note: [ID, Error String] (from db)
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                    +--> assoc: Hash Map (add id from db)
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                         +--> ok: Hash Map (HTTP response, status code 200)
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                              +--> wrap-json-response: JSON String
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                                   +--> application output