In which of the following scenarios would you recommend using associative arrays?
A.
when you want to retrieve an entire row from a table and perform calculations
B.
when you know the number of elements in advance and the elements are usually accessed
sequentially
C.
when you want to create a separate lookup table with multiple entries for each row of the main
table, and access it through join queries
D.
When you want to create a relatively small lookup table, where the collection can be
constructed on memory each time a subprogram is invoked.
Explanation:
D is correct.
http://docs.oracle.com/cd/B10500_01/appdev.920/a96624/05_colls.htm#34607
D
D
c is weong
it’s for nested tables.
http://docs.oracle.com/cd/B19306_01/appdev.102/b14261/collections.htm
D
A: PL\SQL records.
B: varrays.
C : Nested tables.
D: Associated arrays.
So, D is the correct answer only.
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d