Small Indexes

OK, time for some answers, although of course regular readers of this blog will already know the answer :) When selecting one row from the small table as in the quiz in my previous post, the correct order is as follows: 1) PK access of an Index Organized Table. This option only requires just the 1 consistent [...]

Assume you have a tiny little table with just 42 rows (naturally) that all fit in one table block. Order the following options in order of “efficiency” (most efficient option first) when accessing just one of these rows: 1) Full Table Scan of Heap Table 2) PK access of an Index Organised Table 3) Index access [...]