Hello Dieter,

Wednesday, June 28, 2000, 3:57:56 AM, you wrote:

DM> If your patient data is in an SQL database, you do not need
DM> to build (redundant) ZClass instances for them.

DM> Instead, you would use Z SQL Methods to access them.

As i realize, ZSQL methods are merely SQL statements for data
manipulation - select, insert, delete and so on. But some application
logic and data integrity rules may be IMHO wrapped into ZClasses
instead of triggers and stored procedures. It looks promising for
instance to have base class Patient (with appropriate ZSQL methods),
which can produce other classes like Patient with knee problems,
Patient for total arthroplasty and so on, where properties of base
class including ZSQL are inherited and require minimal
additions/changes. Do i suppose wrong?

Best regards,
 Alexander N. Chelnokov
Ural Scientific Institute of Traumatology and Orthopaedics
str.Bankovsky, 7. Ekaterinburg 620014 Russia 
ICQ: 25640913

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