my_external_database:
  adapter: sqlanywhere
  encoding: utf-8
  username: (username)
  password: (password)
  server: (name of server)
  database: (db name)
  host: (IP of server)

class MyExternalModel < ActiveRecord::Base
    establish_connection(:my_external_database)
    self.table_name = '<a particular table in the db>'
    self.primary_key = 'primarykey'
end

. /Applications/SQLAnywhere16/samples/sample_config64.sh
Enter destination directory for copy of the samples [/Users/(user)/sa16_samples]:
Copying samples...
Done

Setting up data sources...

SQL Anywhere Data Source Utility Version 16.0.0.2041
Configuration "SQL Anywhere 16 Demo" written to file /Users/(user)/.odbc.ini
SQL Anywhere Data Source Utility Version 16.0.0.2041
Configuration "SQL Anywhere 16 CustDB" written to file /Users/(user)/.odbc.ini
Done

Setting up sample_env script...
Done