![leeannjones1](/avatars/14384.jpg)
leeannjones1
14.02.2020 •
Computers and Technology
Suppose that a data warehouse for Big-University consists of the following four dimensions: student, course, semester, and instructor, and two measures count and avg grade. When at the lowest conceptual level (e.g., for a given student, course, semester, and instructor combination), the avg grade measure stores the actual course grade of the student. At higher conceptual levels, avg grade stores the average grade for the given combination.
(a) Draw a snowflake schema diagram for the data warehouse.
(b) Starting with the base cuboid [student, course, semester, instructor], what specific OLAP operations (e.g., roll-up from semester to year) should one perform in order to list the average grade of CS courses for each Big-University student.
Solved
Show answers
More tips
- F Food and Cooking Delicious and Simple Fillings for Pies...
- H Health and Medicine How to Help Men Gain Weight?...
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Computers and Technology
- H History Monroe doctrine question in 1823, president james monroe, with the of his advisers, developed what became known as the monroe doctrine. the monroe doctrine said that...
- C Chemistry What feature is common to all microscopes, and how is this feature related in the word microscope ?...
- M Mathematics If L={a,b,c},m={3,4}then find two binary relations of L*mand M*L...
- H History In 1566 protestant iconoclasts threatened to destroy van eyck s...
Ответ:
Ответ:
MP4, specified as MPEG-4 Part 14, is also a multimedia container format used to store video, audio, subtitles and images into one single file.
AVI is the abbreviation for Audio Video Interleave, a multimedia container format introduced by Microsoft.