There isn't a boolean. Put in your EOPrototypes entity an attribute named boolean with external data type char, internal data type String and external width of 1 (why is external width in the internal data type box?). The only two values allowed in this field is 'T' or 'F' (ie., class invariant is value = 'T' or value = 'F')

Similar thing for date and time put in EOPrototypes:

date: external date, internal date
date_time: external datetime, internal date

You can define everything in EOPrototype including primary keys, foreign keys (although these are the same, it is handy to use these to document what an attribute is for). Define your own data types (eg., gender, again char (1)).

Ian

On 20/01/2006, at 2:34 AM, Jim Wong wrote:

In EOModeler, how do I define date n boolean?? how's the format handling done? is there even boolean?

Jim

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