Answered Essay: The purpose of this lab is for you to design a star schema for a data warehouse and to draw the schem

Description:

The purpose of this lab is for you to design a star schema for a data warehouse and to draw the schema in Visio. In addition, you will create the tables for your data warehouse in SQL Server.

Lab tasks:

Given the following dimensions, create a dimensional schema representing a data mart focused on the Dollars in Sales (Sales Facts) of the organization.

Dimension Tables:

Salesperson: SalespersonID (PK), Years of Service, SalespersonName, SupervisorRating

Product: ProductID (PK), Category, Weight, YearsToMarket

Customer: CustomerID (PK), CustomerName, CustomerSize, Location

Location: LocationID (PK), AverageIncome, PopulationSize, NumberOfRetailers

Period: DayID(PK), FullDate, WeekdayFlag, LastDayofMonthFlag

Create a Visio diagram given the information above. Make sure you choose data types in Visio that make sense based on the attribute name. (in general… ID’s can be INT and text fields can be varchar(25)… however, currency, acronyms etc should be assigned appropriately)

If the company wanted to hold the last 3 years of sales data containing information of 2,000 products, at 100 locations, how big would the data mart need to be? Assume the stores are open 5 days a week and sell at least one of each item per day and, storage is roughly 4 bytes / field

Expert Answer

 

Schema type: Snow flake schema

As location dimensions is associated to customer and not to direct sales fact

In below dimension diagram, please find all the dimensions mentioned above and sales fact table

Added data types as per the name of the attribute

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