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Hello:
Can you explain about "uniquery1.Options.EnableBCD", "uniquery1.Options.EnableFMTBCD", these two attributes is how to use do?

Or, what are their functions?

Thanks!

If you use NUMERIC or DECIMAL fields in a database, they are mapped to TFloatField by default.

If you set EnableBCD option to True, UniDAC uses TBCDField.
If you set EnableBCD option to True, UniDAC uses TFmtBCDField.

TBCDField and TFmtBCDField hold exact values. While TFloatField holds approximate values. So you may enable these options if you need to get exact values for NUMERIC fields.