Team #2A DATABASE FOR LA

GAUGE COMPANY

Benn AckleyAjay Bawa

Clarence CheungSteven Leonard

Nhat NguyenEdrick Soetanto

Company Background Customer Request EER Diagram Relational Schema Normalization Analysis Forms and Reports Query implementation Future improvement

Today’s Agenda

Location: Sun Valley, CA

Provides ultra precision machining of Beryllium Alloys and other exotic metals used in aerospace, defense, optics, and nuclear industries.

Major clients:◦ Boeing◦ Northrop Grumman◦ Raytheon

Company Background

Current database: Delmar- a 16-bit legacy database

Difficulty with current database: ◦ Slow and unreliable◦ Many glitches◦ High maintenance cost

To create a database allowing:◦ LA Gauge engineers to effectively communicate with the

floor machinists and keep track of the work flows. ◦ Easy input of series of operations and specifications to

machine a product. ◦ Sales Associate to input customer and order data

Estimated data size: 5,000 – 10,000 records.

Customer Request

EER Diagram

Relational Schema1. Customer (Customer_ID, Company, Lname, Fname, Email, Job_Title,

Business_Phone, Street_Address, City, State, ZIP, Country, Web_Page, Primary_liaison7)

2. Order(Order_ID, Order_Date, Customer_ID1)3. Product(Product_ID, Product_Name, Description, Product_Sales_Price,

Amount_On_Hand, Order_ID2)1. Purchased(Product_ID, Purchased_Cost, Purchased_Date, Supplier_ID5) 2. In-House(Product_ID, Manufacturing_Cost, Manufacturing_Date,)

4. Shipment(Shipment_ID, Tracking_Number, EID7a)1. Ship_In(Shipment_ID, Supplier_ID5, Received_Date, Receiving_Employee7, RM_ID6)2. Ship_Out(Shipment_ID, Customer_ID1, Shipped_Date, Shipping_Cost)

5. Supplier(Supplier_ID, Company, Lname, Fname, Email, Job_Title, Business_Phone, Business_Phone, Street_Address, City, State, Province, ZIP, Country, Web_Page, Account_ID23)

6. Raw_Material(RM_ID, RM_Name , Description, RM_Cost, Supplier_ID5, Shipment_ID4, Account_ID23, Amount_On_Hand, Units, Amount_Purchase )

7. Employee(Employee_ID, Lname, Fname, Email, Phone, Streeet_Address, City, State, ZIP, Country, Schedule, Working_Hour, Department_ID12, Starting_Date, Salary, Supervisor7)

a) Sales_Associate(Employee_ID, Commission)b) Technician(Employee_ID)c) Other(Employee_ID, Job_Duty)

8. Job(Job_ID, Job_Name, Job_Description, Tech_ID7b, Product_ID3b, Employee_Modify7b, Modifying_Date)

9. File(File_ID, File_Name, File_Description, Tech_ID7b, Modifier7b, Created_Date, Modifying_Date, Job_ID8)

10. Procedure(Procedure_ID, Job_ID8, Procedure_Name, Description, File_ID9)

11. Operation(Operation_ID, Procedure_ID, Job_ID8, Description, Operation_Name, WorkCenter_ID13 , Hardware_ID14)

12. Department(Department_ID, Department_Name, Department_Location, Department_Phone)

13. WorkCenter(WorkCenter_ID, WorkCenter_Name, Description, Location, WorkCenter_Capacity, Operating _Hours, Managing_Department12)

14. Hardware(Hardware_ID, Hardware_Name, Hardware_Description, Hardware_Usage_Period, Hardware_Size, Hardware_Weight, Hardware_Brand, WorkCenter_ID13, Operation_ID11)

9. Tool_Type(Hardware_ID, Replacement_Period)

10. Machine_Type(Hardware_ID, Machine_name, Description, Cost)

15. Tool_Token (Tool_Token_ID, Tool_Token_Name, Quantity, Hardware_ID14a)

16. Machine_Token(Machine_Token_ID, Machine_Token_Name, Quantity, Hardware_ID)

17. Product_components(Product_ID3, Component_ID3, Quantity)

18. Is_authorized_to_use(Hardware_ID14b, Tech_ID7b)

19. Request (Order_ID2, Product_ID3, quantity)

20. Is_Composed_Of (Product_ID3, RM_ID6)

21. LA_Gauge_Account (Payment_ID, Order_ID2, Customer_ID1, Amount, Due_Date, Date_Of_Payment, Penalty)

22. Machine_Status(Machine_ID14b, Inspection_Date, Status)

23. Product_Materials(Product_ID14b, RM_ID, Quantity)

Relational Schema

RELATIONAL SCHEMA: 1:1 RELATIONSHIP

8. Job(Job_ID, Job_Name, Job_Description, Product_ID3b, Employee_Modify7b, Modifying_Date)

RELATIONAL SCHEMA: 1:N RELATIONSHIP

7. Employee(Employee_ID, Lname, Fname, Email, Job_Title, Phone_Address, Streeet_Address, City, State, ZIP, Country, Schedule, Working_Hour, Department_ID12, Starting_Date, Supervisor7)

a. Sales_Associate(Employee_ID, Commission)

b. Technician(Employee_ID, Salary)c. Others (Employee_ID, Wage, Job_Duty)

MS Access Relationship View

In 1NF: ◦Procedure(Procedure_ID, Job_ID, Procedure_Name, Description, File_ID)Functional Dependencies:◦ FD1: {Procedure_ID} {Procedure_Name}◦ FD2: {Procedure_ID, Job_ID} {File_ID}

In 2NF: ◦Procedure1(Procedure_ID, Job_ID, File_ID)◦Procedure2(Procedure_ID, Procedure_Name, Description)

The relations are in 2NF and satisfy both 3NF and BCNF requirements as well

Normalization 1 (1NF)

In 1NF:Operation(Operation_ID, Procedure_ID, Job_ID, Description, Operation_Name, WorkCenter_ID, Hardware_ID)◦Functional Dependencies:

FD1: Operation_ID {Description, Operation_Name} FD2: {Operation_ID, Procedure_ID, Job_ID} {WorkCenter_ID,

Hardware_ID} FD3: Hardware_ID WorkCenter_ID

In 2NF:◦Operation1(Operation_ID, Procedure_ID, Job_ID, WorkCenter_ID, Hardware_ID)◦Operation2(Operation_ID, Description, Operation_Name)

Normalization 2 (1NF)

In 3NF:◦ Operation1A(Operation_ID, Procedure_ID,

Job_ID, Hardware_ID)◦ Operation1B(Hardware_ID, Workcenter_ID)

The relations are in BCNF too

Normalization 2 (1NF)

In 2NF:LA_Gauge_Account ( Account_ID, Amount, Date, Order_ID, Customer_ID)Functional Dependencies:

FD1: Account_ID {Amount, Date, Order_ID, Customer_ID} FD2: Order_ID Customer_ID

In 3NF:◦LA_Gauge_Account1(Account_ID, Amount, Date, Order_ID)◦LA_Gauge_Account 2(Order_ID, CustomerID)

The relations are in BCNF too

Normalization 3 (2NF)

In 3NFDepartment (Department_ID, Department_Name, Department_Location, Department_Phone)◦Functional Dependencies:

FD1: Department_ID {Department_Name, Department_Location, Department_Phone}

FD2: {Department_Name, Department_Location} Department_ID FD3: {Department_Phone} {Department_Location}

In BCNF: ◦Department1(Department_ID, Department_Name, Department_Phone)◦Department2(Department_Phone, Department_Location)

Normalization 4 (3NF)

In BCNFOrder(Order_ID, Order_Date, Customer_ID)Functional Dependencies:FD1: Order_ID {Order_Date, Customer_ID}

Normalization 5 (BCNF)

Switchboard

Form: Add new customer

Form: Add new job

Report: Customer Payment Account

Report: Employee salary

Functions: ◦ To indicate if any of the raw material is out of stock. ◦ To compute the optimal order amount using the

Economic Oder Quantity (EOQ)

Purposes: ◦ Help the sales department order the out-of-stock items

ASAP minimize any possible delays & start the production process on time

◦ Help decrease the storage cost and increase the company’s cash flow.

QUERY 1: Optimal Order Quantity

EOQ model assumptions:◦ Fixed cost is 100$ and holding cost is 10%

material price◦ Deterministic demand

Q*: optimal order quantity D: the product’s demand rateS: fixed cost per orderH: annual holding cost per unit of product

MS Access Implementation

SELECT sub.*, SQR(2*sub.demand*100/(0.1*sub.rm_cost)) AS reorder_quantity

FROM (SELECT rm.rm_id, rm.amount_on_hand, rm.rm_cost, (rm.amount_purchased-rm.amount_on_hand)/DATEDIFF('ww',s.received_date,DATE()) AS demand, s.received_date FROM Raw_Material AS rm LEFT JOIN Ship_In AS s ON s.rm_id=rm.rm_id) AS sub

WHERE sub.amount_on_hand<=sub.demand;

Implementation

Functions: ◦ To sums up the total usage time of each machine

starting from its first operation◦ To estimate the remaining service time (the survival

period) of each machine using the survival analysis.

Purposes: ◦ Help the maintenance team determines when a

check-up or a replacement is necessary

◦ Help the financial department and the executive committee in distributing future investment accordingly (since a machine may cost up to million dollars)

QUERY 2 : Machine’s usage time and maintenance schedule

Option Compare Database

Private Sub Command0_Click()

On Error GoTo Err_Command0_Click

Dim mySQL As String

mySQL = "SELECT [Inspection_date], [status] INTO

m_status FROM machine_status WHERE [machine_id] = 1"

DoCmd.RunSQL mySQL

DoCmd.TransferText acExportDelim,

TableName:=“m_status",

File:="C:\machine_status.csv",

HasFieldNames:=True

Shell("c:\run_cox_survival.R", 1)

Exit_Command0_Click:

Exit Sub

Err_Command0_Click:

MsgBox Err.Description

Resume Exit_Command0_Click

 

End Sub

Implementation

Integrate our database with a job scheduling package◦ Record job start and stop times to determine historic

operation duration◦ Analyze whether SPT or Moore’s Algorithm is more efficient

Provide job tracking report for customers to view online◦ They would always know where their product was and who

was working on it◦ Could also be used by management to snapshot the factory

status

Iterate with test users to obtain feedback and refine the database

Users would identify additional functionality and workflows

Future Improvements

Functions: To rank each product based on its service category from the highest profitability to the lowest ones.

Purposes: ◦ The marketing department could recruit more customers

interested in purchasing the top profitable products.

◦ The financial department can distribute more investment into advancing the current technology of that given services improves the product’s quality and attracts more customers.

QUERY 3: Product’s profitability ranking

SELECT ptop.product_id, (ptop.product_sales_price - pc_sub.cost - pm_sub.cost) AS profit

FROM (product AS ptop LEFT JOIN (SELECT p.product_id, SUM(p2.product_sales_price * pc.quantity) AS costFROM ( (product pLEFT JOIN product_components pcON pc.product_id = p.product_id )LEFT JOIN product p2ON pc.component_id = p2.product_id )GROUP BY p.product_id ) AS pc_sub ON pc_sub.product_id = ptop.product_id) LEFT JOIN (SELECT p.product_id, SUM(rm.rm_cost * pm.quantity) AS costFROM ( (product pLEFT JOIN product_materials pmON pm.product_id = p.product_id )LEFT JOIN raw_material rmON rm.rm_id = pm.rm_id )GROUP BY p.product_id ) AS pm_sub ON pm_sub.product_id = ptop.product_id

ORDER BY ptop.product_sales_price - pc_sub.cost - pm_sub.cost DESC;

SQL

Access Implementation:

Functions: ◦ To sort out all of the different works centers needed

to perform a given job and rank them according to the job’s priority

◦ Within one work center, lists out the operating hours of each machine along with the names of the technicians who are authorized to operate that type of machines.

Purposes: ◦ To help the scheduling department ease down the

difficulties in scheduling the work centers and the technicians’ working schedule

◦ Increase productivity

QUERY 4: Operating hours and scheduling

4a. SELECT p.procedure_name, p.description, f.file_nameFROM [procedure] AS p LEFT JOIN file AS f ON

f.File_id=p.File_IDWHERE p.job_id=job;4b. SELECT o.operation_name, o.description,

w.workcenter_name, h.hardware_nameFROM (([procedure] AS p LEFT JOIN operation AS o ON

o.procedure_id=p.procedure_id) LEFT JOIN workcenter AS w ON w.workcenter_id=o.workcenter_id) LEFT JOIN hardware AS h ON h.hardware_id=o.hardware_id

WHERE p.job_id=job;

SQL (4a & 4b)

4c.SELECT e.fname, e.lname, tech.cntFROM employee AS e LEFT JOIN (SELECT a.tech_id, COUNT(*) AS cnt FROM

((job AS j LEFT JOIN [procedure] AS p ON p.job_id=j.job_id) LEFT JOIN operation AS o ON o.procedure_id=p.procedure_id) LEFT JOIN is_authorized_to_use AS a ON a.hardware_id=o.hardware_id WHERE j.job_id=job GROUP BY a.tech_id) AS tech ON tech.tech_id=e.employee_id

WHERE tech.cnt>0ORDER BY tech.cnt DESC;

4d.SELECT p.product_name, p.description, pc.quantity, p.product_sales_priceFROM (job AS j LEFT JOIN product_components AS pc ON

pc.product_id=j.product_id) LEFT JOIN product AS p ON p.product_id=pc.component_id

WHERE j.job_id=job;

SQL (4c & 4d)

Access Implementation: List out the work center & operation

Access Implementation: List out the work center & operation

Access Implementation: List out the procedures & files

List out the employees authorized to use a certain hardware

List out the employees authorized to use a certain hardware (cont)

List out which job correspond to which product

Function: To rank all of the sales associates (SA) according to their effectiveness index, which is calculated as the ratio of the profits made from all of the orders that employee makes during that year to their base salary.

Function:◦Help the human resources department compute the employees’ year-end bonuses and reward the SAs with a high effectiveness index accordingly.

QUERY 5: Sales Associate’s effectiveness ranking

SELECT e.fname, e.lname, sub.total_sales / e.salary AS profitabilityFROM (SELECT c.primary_liason, SUM(o_amt.order_total) AS total_sales

FROM ( ( [order] o LEFT JOIN (

SELECT r.order_id, SUM(r.quantity * p.product_sales_price) AS order_total

FROM request rLEFT JOIN product pON p.product_id = r.product_idGROUP BY r.order_id ) o_amt

ON o.order_id = o_amt.order_id )LEFT JOIN [customer] cON o.customer_id = c.customer_id )WHERE o.order_date >= DATEADD('yyyy', -3, DATE())GROUP BY c.primary_liason ) AS sub LEFT JOIN employee AS e ON e.employee_id = sub.primary_liason

ORDER BY sub.total_sales / e.salary DESC;

SQL

Access Implementation:

Question?

Thank You