Table T1 wants to ensure that the key field t1-fielda
entered is valid against a field t2-fielda in table T2.
Which is the foreign key table?
a) T1
b) T2
c) T3 from the dictionary
d) Cannot be determined
Note: I think the answer is A. What do you think. Please
answer only if you are very sure. Else pls ignore.
What is needed to ensure a check field is verified against the referenced key field of the check table? a) same data element is required for check field and referenced field b) same domain is required for check field and referenced field c) same data type only is required for check field and referenced field d) all key fields MUST have domain equality between check table and foreign key table Note: I am confused between A or C ? Please answer only if you are very sure. Else pls ignore.
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