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.
Re: If you block someone's text are they notified? If the person who is trying to text you is an AT&T customer, they would receive a text message that says: The wireless subscriber you are trying to reach is not accepting incoming msgs at this time. If they are not an AT&T customer, they would not get a message back and they would not know whether or not their message was successful.