One of the oldest and simplest encrypting technique is the "Caesar cipher". This involves shifting each of the letters in a message by a set number of places along the alphabet (cycling back the beginning of the alphabet if necessary). For example, if we wanted a shift of 5 places then A becomes

This oracle query returns Calendar for the current year. This Oracle SQL query returns Calendar for the current year.

This query just returns experience of employees in the format "yy years mm months dd days".