With respect to database systems, which of the following statement(s) is (are) true? A subschema cannot prevent access to those portions of the database that do not apply to it. A report writer is a high-level, English-like language with powerful, easy-to-use commands help sort, order, and update data. DBMS software links the way data are physically stored with each user's logical view of the data An individual user's view of portions of a database is referred to as an internal-level schema