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CS614 Assignment No 01 Solution & Discussion Due Date:17-11-2016
Assignment No. 1 Graded Semester Fall 2016 Data Warehousing– CS614 Total Marks: 10 Due Date: 17-11-2016 Objective: This assignment has been designed to develop your ability to apply De-Normalization Techniques and principles to normalized data/tables. Instructions: Please read the following instructions carefully before solving & submitting the assignment: 1. The assignment will not be accepted after due date. 2. Zero marks will be awarded to the assignment that does not open or the file is corrupt. 3. The assignment file must be an MS Word (.doc) file format; Assignment will not be accepted in any other format. 4. Zero marks will be awarded to the assignment if copied (from other student or copied from handouts or internet). 5. Zero marks will be awarded to the assignment if the Student ID is not mentioned in the assignment file. For any query about the assignment, contact only at CS614@vu.edu.pk Please do not post queries related to assignment on MDB. Question: [10 Marks] The four tables given below are in normalized form. You are required to de-normalize these tables and to combine them to a single table using demoralization techniques you have studied so far. Table#1 Student_ID Name Address/City Salutation ID BC1234 Ayesha Multan road, Lahore 1 MC2235 Adil Saleem Clifton Karachi 2 MC2236 Komel Masood G-12, Islamabad 3 MS3456 Kashif Hayatabad, Peshawar 2 Table#2 Salutation ID Salutation 1 Ms. 2 Mr. 3 Mrs. Table#3 Student_ID Course Code BC1234 CS101 BC1234 CS201 MC2235 CS201 MC2235 CS301 MC2236 CS101 MC2236 MGT101 MS3456 CS701 MS3456 CS702 Table#4 Course Code Course Name Instructor Campus CS101 Introduction to Computing Dr. Ijaz Lahore CS201 Computer Programing Dr. Saqib Karachi CS301 Data Structures Dr. Jamal Islamabad MGT101 Management Dr. Ali Islamabad CS701 Algorithms Dr. Hassan Lahore CS702 Automata Theory Dr. Atif Lahore Note: Deadline for assignment submission is 17th November 2016. Wish you best of Luck!
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is sequence sy bny ga kia ?
Yes sahi hai.
kaya wo fields ks sequence thik hai
Zain i think sequence thek ha. Jese question me dia ha apka usi tarha ha.
Collapsing tables can have two kind of relationships.
- Two entities with a One-to-One relationship.
- Two entities with a Many-to-Many relationship.
Pre-Joining has only one relationship.
- one-to-many relationship between two (or more) tables.
In my opinion Pre-Joining is most suitable technique(not sure). Since we have one-to-many relationship between two (or more) tables in our scenario.
What do you guys say? share your ideas.
I think Pre-joining... coz mujhe jahan tak smjh aya we have one to many relationship jaise student id hai BC1234 iss ka relation hai 2 course code k sath and so on...agr mai ghlt hon toh b kindly bataiye and concept agr ghlt hai toh wo b clear kr dein mera
wo sequence b ghlt lag rha iss wajah se k 1 PK hai that is student ID 1 aur PK hai in 4th table Course Code...and cs201 2 students ka course hai bc1234 ka aur MC 2235 ka and i think sequence ye hoga
Student_ID, course code, Name, City, Salutation ID, Salutation, Course Name, Instructor, campus
agr ghlt hai toh b bta dein
kya yeh thek hey
Student ID,Salutation ID,Name,Salutation,Address/City,Course ,Code,Course Name,Instructor,
Me ne jo table banaya ha us ki tarteeb ye ha,
st.id, salution id, salution, name, address/city, course, coursecode, instructor, campus
Mje jis ne zyada confuse kia wo step campus ka tha,
Ab b doubt ha k wo campus students ka ha ya instructor ka ha?
same asa he bna mera b
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