You create a data block based on a relational table containing a REF column. You select the REF column for your form module. What is true about the items based on the REF column attributes?（）<br>A:The Query Only property is set to Yes. <br>B:The Conceal Data property is set to Yes. <br>C:The Insert Allowed property is set to Yes. <br>D:The Update Allowed property is set to Yes.

You create a data block based on a relational table containing a REF column. You select the REF column for your form module. What is true about the items based on the REF column attributes?（）
A:The Query Only property is set to Yes.
B:The Conceal Data property is set to Yes.
C:The Insert Allowed property is set to Yes.
D:The Update Allowed property is set to Yes.

出自：Oracle认证

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