Logical schema are used to allow an end user the ability to access and
manipulate relational database data without knowledge of the structure
of the relational database. A logical schema is first created specifying
which tables are available to an end user, and the relationships
between columns of those tables.
manipulate relational database data without knowledge of the structure
of the relational database. A logical schema is first created specifying
which tables are available to an end user, and the relationships
between columns of those tables.