Oracle PL Data Structure

• Varrays must use sequential numbers as subscripts.
• The DELETE(n) method cannot be used with varrays.
• Both associative arrays and nested tables can hold an arbitrary number of elements.
• Both nested tables and varrays can be used as column types in database tables.
• Associative arrays can use numbers and strings for subscripts.
• Nested tables LAST and COUNT may give different values.