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# CS614 Assignment No 01 Fall 2020 Solution & Discussion Due Date:26-11-2020

CS614 Assignment No 01 Fall 2020 Solution & Discussion Due Date:26-11-2020

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#Solution of #CS614 !Assignment 1 #Fall2020 by #Washi - #Data #warehousing

CS614 Assignment solution Fall 2020

CS614_Assignment_No_01_Solution_Fall_2020

Question 1  (Marks 10)

Consider the following part of an ERD of a Product Inventory System.

Which de-normalization technique will be used for the given ERD part? You are required to mention the name of the technique, apply this technique on the given ERD and provide the resultant de-normalized table.

Question 2  (Marks 10)

Consider the following information about two tables: Master and Detail.

Table1 (Master):

Number of records:     =   50000

Table2 (Detail):

Number of records:     =   30000000 Bytes

Suppose you have applied the pre-joining De-normalization technique on given tables. You are now required to calculate the size of resultant table in Gigabytes (GB). The reference column in these two tables is of 8 bytes.

Hint: The number of records in De-normalize table will 30000000.

Note: Deadline for assignment submission is 26 November 2020.

#cs614assignment1solution #cs614fall2020assignment
CS614 Assignment 1 Solution Fall 2020 | CS614 Assignment 1 Solution 2020

CS614 Assignment 1 Solution Fall 2020 | CS614 Assignment 1 Solution 2020

Question 1 me Collapsing tables ni aye ga pre-joining ki jaga kyon ke entities me relationship many-to-many ka hai

Collapsing Tables is used where.
- Two entities with a One-to-One relationship.
- Two entities with a Many-to-Many relationship.

Pre-joining is used where:

This technique is generally
used when there is a one-to-many relationship between two (or more) tables

product or customer entity me many-to-many relationship hai

CS614-Assignment-Solution

CS614-Assignment-Solution.docx

# CS614 Assignment Solution # 1 Fall 2020 | Data Warehousing|

Question 1 me Collapsing tables ni aye ga pre-joining ki jaga kyon ke entities me relationship many-to-many ka hai

Collapsing Tables is used where.
- Two entities with a One-to-One relationship.
- Two entities with a Many-to-Many relationship.

Pre-joining is used where:

This technique is generally
used when there is a one-to-many relationship between two (or more) tables

product or customer entity me many-to-many relationship hai

# cs614 assignment no1 fall 2020

Yar Collapsing tables ni aye ga pre-joining ki jaga kyon ke entities me relationship many-to-many ka hai

Collapsing Tables.
- Two entities with a One-to-One relationship.
- Two entities with a Many-to-Many relationship.

question 1 me product or customer entity me many-to-many relationship hai

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