Definition: A view is a representation of a SQL statement that is stored in memory so that it can be re-used. A view is a logical entity or logical table that is essentially a SQL statement stored in the database in the system tablespace.
As it turns out, it's very likely that your Facebook and Twitter messages are better protected from government snoops than your phone texts, even when you send them from the same device.
The SMS message typically consists of a unique code that the organization sends to the user's cellphone. After the user receives the message on his cellphone, he may type the code into the organization's website or email the code back to the organization.