Usage with Clarion
Jorge Brugger; Vernon Godwin; Vladimir Tsvigun
Clarion users can work with mixed-case object names in Firebird.
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Create your database in Firebird.You can use table names like "Pending_Invoices"and fields like"Order_Number".
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Create the DSN for the Database, making sure to check all options in “Extended Identifier Properties” 
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Open your dictionary, and import multiple tables as normal from the odbc source.It will work, but do not try to browse or use the files in an application yet. 
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For every field, type in the “External Name” the name of the field surrounded by quotes (for example, type "Order_Number"in the external name).
That’s it!Now use your dictionary with mixed case identifiers, without problems.But remember — you must use double quotes around object names in all SQL statements from inside Clarion.