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@ragtime
ragtime / gist:2cfb981fbc5676182d64
Created February 12, 2015 07:51
simple example of a group definition for the relational algebra calculator
group: bank example
description[[ the data for this dataset was generated using <http://www.generatedata.com/>
* the relation _Customers_ contains basic information about the customers of the bank.
* the relation _Accounts_ contains the basic information of a single account. Note that a customer can have any number of accounts.
* the relation _PremiumCustomers_ contains the customer-ids of all customers with a total balance over 1000
]]
Customers = { cid firstname lastname