A database user manually notes that "The file contains two hundred records, each record containing nine fields." Use appropriate relational database terminology to "translate" that statement. Use Figure Q$3\mathrm{.}8$ to answer Questions $8-12.$

Using the STUDENT and PROFESSOR tables, illustrate the difference between a natural join, an equijoin, and an outer join.

Create the table that would result from $$ stu code $($student$).$

Create the table that would result from $$ stu code, dept code $($student $||><mi\; id="EditorElement\_160964">|</mi><mi\; id="EditorElement\_160944">|</mi>$ professor$).$