SQL Server : View names
The view is called whatever is listed in the CREATE statement, which would look like this in the script.

CREATE VIEW viewA AS


The vw_tableB is an table alias 
https://technet.microsoft.com/en-us/library/ms187455.aspx


  The readability of a SELECT statement can be improved by giving a table an alias, also known as a correlation name or range variable. A table alias can be assigned either with or without the AS keyword: