For an Extra bit On Oracle, yes you will find a detailed
explanation, for now just read the first 5 lines to follow even
if you don't understand to begin with don't worry Iam sure you
will understand completely what is this extra bit on oracle is;
if you finish reading this information with concentration. Well,
if there is a situation where you have added additional values
for the columns in an oracle table containing 14 rows, and you
are repeatedly trying to delete the additional values of the
columns, however making them to null, infact it is surprising to
see even after deleting that column values when you execute
select * from table_name; then always it is shown for example 15
rows selected message at the bottom of the output instead of 14
rows selected message, then use oracle rowid! To know how this
problem can be tackled, just read on, moreover it is absolutely
funny a null data at the bottom of the column list of the oracle
table appears and the bottom line displays the number of the
rows selected inc