Building a View
A view is a virtual table that, in itself, doesn’t contain any data or information. All it contains is the query that the user defines when creating the view. A view is a named query that can be used against one or more tables. Views are used as a security measure by restricting users to accessing only certain columns or rows from an underlying table, as a method of joining data from multiple tables and presenting it as if that data resided in one table, and as a method of returning summary data instead of detailed data.