Consider an entity type SECTION in a UNIVERSITY database, which describes the section offerings of courses. The attributes of SECTION are SectionNumber, Semester, Year, CourseNumber, Instructor, RoomNo (where section is taught), Building (where section is taught), Weekdays (domain is the possible combinations of weekdays in which a section can be offered {MWF, MW, TT, etc.}). Assume tat SectionNumber is unique for each course within a particular semester/year combination (that is, if a course if offered multiple times during a particular semester, its section offerings are numbered 1, 2, 3, etc.). There are several composite keys for SECTION, and some attribute sare components of more than one key. Identify three composite keys, and show how they can be represented in an ER schema diagram.
What will be an ideal response?
Computer Science & Information Technology
You might also like to view...
Which of the following best describes a chart data series?
A) It is usually represented by a variety of colors. B) It is a collection of related data points. C) It is the the text that identifies data markers. D) It is the area bound by the axes in a chart.
Computer Science & Information Technology
What is a deadlock?
What will be an ideal response?
Computer Science & Information Technology
The burden of ________implies that a defendant is innocent until proven guilty
Fill in the blank(s) with the appropriate word(s).
Computer Science & Information Technology
When both parties prove their identities to the other, this is called ________.
mutual authentication symmetric authentication authentication
Computer Science & Information Technology