Which statement is false?

a$.$ If a permission is set on a table, it applies to all objects that are part of that table.

b$.$ If you have a database with millions of records, queries are the only realistic way that you will find anything useful.

c$.$ Instead of accessing the database manually, users can instead use a graphical interface.

d$.$ Non$-$structured data is often referred to as semi$-$structured data.