TAL Star Diagram. BCISTUTOR.weebly.com

Transcription

1 TAL Star Diagram

2 Build the TAL FACT Table FIRST! Don t break the relations yet. Save all Queries.

3 TAL OrderDetail Query Datasheet View (12 Records) QBE View SELECT Orders.OrderNum, OrderLine.ItemNum, Orders.OrderDate, Orders.CustomerNum, Customer.RepNum, OrderLine.NumOrdered, OrderLine.QuotedPrice, [OrderLine]![NumOrdered]*[OrderLine]![QuotedPrice] AS ExtendedPrice FROM Rep INNER JOIN (Customer INNER JOIN (Orders INNER JOIN OrderLine ON Orders.OrderNum = OrderLine.OrderNum) ON Customer.CustomerNum = Orders.CustomerNum) ON Rep.RepNum = Customer.RepNum;

4 TAL OrderDetail Table Datasheet View (12 Records) QBE View SELECT Orders.OrderNum, OrderLine.ItemNum, Orders.OrderDate, Orders.CustomerNum, Customer.RepNum, OrderLine.NumOrdered, OrderLine.QuotedPrice, [OrderLine]![NumOrdered]*[OrderLine]![QuotedPrice] AS ExtendedPrice INTO OrderDetail FROM Rep INNER JOIN ((Customer INNER JOIN Orders ON Customer.CustomerNum = Orders.CustomerNum) INNER JOIN OrderLine ON Orders.OrderNum = OrderLine.OrderNum) ON Rep.RepNum = Customer.RepNum;

5 TAL OrderDetail Table Set the Primary Keys Index Pane View ALTER TABLE OrderDetail Add PRIMARY KEY (OrderNum, ItemNum); CREATE INDEX CustomerNDX ON OrderDetail (CustomerNum); CREATE INDEX RepNDX ON OrderDetail (RepNum); CREATE INDEX DateNDX ON OrderDetail (OrderDate); CREATE INDEX ItemNDX ON OrderDetail (ItemNum);

6 Make the TAL TIME Table Datasheet View (4 Records) QBE View SELECT Orders.OrderDate, Year([Orders]![OrderDate]) AS [Year], Month([Orders]![OrderDate]) AS [Month], MonthName(Month([Orders]![OrderDate]),0) AS MonthName, Day([Orders]![OrderDate]) AS [Day], Weekday([Orders]![OrderDate]) AS WeekDay, WeekdayName(Weekday([Orders]![OrderDate])) AS WeekName, Now() AS [Current] FROM Orders GROUP BY Orders.OrderDate, Year([Orders]![OrderDate]), Month([Orders]![OrderDate]), MonthName(Month([Orders]![OrderDate]),0), Day([Orders]![OrderDate]), Weekday([Orders]![OrderDate]), WeekdayName(Weekday([Orders]![OrderDate])), Now();

7 Make the TAL TIME Table Datasheet View (4 Records) QBE View SELECT Orders.OrderDate, Year([Orders]![OrderDate]) AS [Year], Month([Orders]![OrderDate]) AS [Month], MonthName(Month([Orders]![OrderDate]),0) AS MonthName, Day([Orders]![OrderDate]) AS [Day], Weekday([Orders]![OrderDate]) AS WeekDay, WeekdayName(Weekday([Orders]![OrderDate])) AS WeekName, Now() AS [Current] INTO [TimeTable] FROM Orders GROUP BY Orders.OrderDate, Year([Orders]![OrderDate]), Month([Orders]![OrderDate]), MonthName(Month([Orders]![OrderDate]),0), Day([Orders]![OrderDate]), Weekday([Orders]![OrderDate]), WeekdayName(Weekday([Orders]![OrderDate])), Now();

8 TAL Time Table Set the Primary Keys Index Pane View ALTER TABLE TimeTable Add PRIMARY KEY (OrderDate); CREATE INDEX YearNDX ON TimeTable (Year); CREATE INDEX MonthNDX ON TimeTable (Month); CREATE INDEX DayNDX ON TimeTable (Day); CREATE INDEX WDNDX ON TimeTable (WeekDay);

9 Now Break the Relations Homework looks like the preceding slides (with some variation)

10 TAL Star Diagram

11 TAL OrderDetail Table Datasheet View (12 Records) QBE View SELECT Orders.OrderNum, OrderLine.ItemNum, Orders.OrderDate, Orders.CustomerNum, Customer.RepNum, OrderLine.NumOrdered, OrderLine.QuotedPrice, [OrderLine]![NumOrdered]*[OrderLine]![QuotedPrice] AS ExtendedPrice INTO OrderDetail FROM Rep INNER JOIN ((Customer INNER JOIN Orders ON Customer.CustomerNum = Orders.CustomerNum) INNER JOIN OrderLine ON Orders.OrderNum = OrderLine.OrderNum) ON Rep.RepNum = Customer.RepNum;

12 TAL OrderDetail Table Set the Primary Keys Index Pane View ALTER TABLE OrderDetail Add PRIMARY KEY (OrderNum, ItemNum); CREATE INDEX CustomerNDX ON OrderDetail (CustomerNum); CREATE INDEX RepNDX ON OrderDetail (RepNum); CREATE INDEX DateNDX ON OrderDetail (OrderDate); CREATE INDEX ItemNDX ON OrderDetail (ItemNum);

13 Datasheet View (15 Records) TAL OrderDetail 3NF Relation List OrderDetail [OrderNum, ItemNum, OrderDate, CustomerNum, RepNum, NumOrdered, QuotedPrice, ExtendedPrice]

14 Make the TAL TIME Table Datasheet View (4 Records) QBE View SELECT Orders.OrderDate, Year([Orders]![OrderDate]) AS [Year], Month([Orders]![OrderDate]) AS [Month], MonthName(Month([Orders]![OrderDate]),0) AS MonthName, Day([Orders]![OrderDate]) AS [Day], Weekday([Orders]![OrderDate]) AS WeekDay, WeekdayName(Weekday([Orders]![OrderDate])) AS WeekName, Now() AS [Current] INTO [TimeTable] FROM Orders GROUP BY Orders.OrderDate, Year([Orders]![OrderDate]), Month([Orders]![OrderDate]), MonthName(Month([Orders]![OrderDate]),0), Day([Orders]![OrderDate]), Weekday([Orders]![OrderDate]), WeekdayName(Weekday([Orders]![OrderDate])), Now();

15 TAL Time Table Set the Primary Keys Index Pane View ALTER TABLE TimeTable Add PRIMARY KEY (OrderDate); CREATE INDEX YearNDX ON TimeTable (Year); CREATE INDEX MonthNDX ON TimeTable (Month); CREATE INDEX DayNDX ON TimeTable (Day); CREATE INDEX WDNDX ON TimeTable (WeekDay);

16 Datasheet View (4 Records) TAL TimeTable 3NF Relation List TimeTable [OrderDate, Year, Month, MonthName, Day, WeekDay, WeekName, Current]

17 Datasheet View (4 Records) TAL Rep 3NF Relation List Rep [RepNum, LastName, FirstName, Street, City, State, PostalCode, Commission, Rate]

18 Datasheet View (15 Records) TAL Item 3NF Relation List Item [ItemNum, Description, OnHand, Category, Storehouse, Price]

19 Datasheet View (12 Records) TAL Customer 3NF Relation List Customer [CustomerNum, CustomerName, Street, City, State, PostalCode, Balance, CreditLimit]

20 TAL Data Warehouse Relation List Fact Table 3NF OrderDetail [OrderNum, ItemNum, OrderDate, CustomerNum, RepNum, NumOrdered, QuotedPrice, ExtendedPrice] Dimension Tables 3NF Customer [CustomerNum, CustomerName, Street, City, State, PostalCode, Balance, CreditLimit] Rep [RepNum, LastName, FirstName, Street, City, State, PostalCode, Commission, Rate] Item [ItemNum, Description, OnHand, Category, Storehouse, Price] TimeTable [OrderDate, Year, Month, MonthName, Day, WeekDay, WeekName, Current]