多选题You are creating a form that will access an Oracle8 database. On which three sources can you base a data block?（）ABFILEBREF columnCObject tableDColumn objectEINSTEAD-OF trigger
题目
多选题
You are creating a form that will access an Oracle8 database. On which three sources can you base a data block?（）
A
BFILE
B
REF column
C
Object table
D
Column object
E
INSTEAD-OF trigger