March 17, 2018



A Key is a data item that exclusively identifies a record. In other words, key is a set of column(s) that is used to uniquely identify the record in a table. It is used to fetch or retrieve records / data-rows from data table according to the condition/requirement. K...

March 2, 2018

Car-opening tool you're most likely to have on you at any given time is a shoestring. Unfortunately, this method only works on locking mechanisms that unlock by pulling up.