1. Database Introduction
Class
Enrollment program
Database
Payroll
System
DBMS
DBMS
Database
E-commerce
Website
Query or
Reporting
Tools
RDBMS: Relational Data Base Management System
SQL: Structured Query Language
DBA: Data Base Administrator
DB Designer/Data Modeler

2. Multiple (Dual) Perspectives
ACME Enterprise
We do
these things
We use
this data
CRUD
Operations
Create
Read
Update
Delete
SQL
Insert
Update
Delete
Select
DATA (Information)
Activity(Operation)
EMPLOYEE
(Resource)
HIRE
PAY
PROMOTE
FIRE
......
....
User
Interface
App.
Data
Process

3. Database Tables

4. SQL Select and Query Design in Access
SELECT COURSE.C_ID, COURSE.TITLE, COURSE.FEE
FROM COURSE
WHERE (((COURSE.FEE)>250 And (COURSE.FEE)<=350))
ORDER BY COURSE.FEE DESC;

5. Relationships among Access Database Objects
Basic Database Objects
Tables
Database Application
Form
Report
Query
(View)
QUERY in Access can be SELECT, INSERT, UPDATE, or DELETE.
A saved SELECT query is officially called a View in SQL standard. When you save a query, you save the definition of the query, not the query result.
You can create a query against a table or a query.
You can create a form or report against a table or a query.

6. Database: Tables, Columns, Rows, Primary Keys, Foreign Keys and Relationships
Potential relational database for Coca-Cola Bottling Co.

7. Data Model (Entity Relationship Diagram)
Member
placed by;
is enrolled under;
Member
Agreement
Order
places
applies to
sells;
generates;
established by;
is sold on
generated by
established
is featured in;
sponsors;
Product
Promotion
Club
features
is sponsored by

8. Data Modeling Case Study
The following is description by a pharmacy owner:
"Jack Smith catches a cold and what he suspects is a flu virus. He makes an appointment with his family doctor who confirm his diagnosis. The doctor prescribes an antibiotic and nasal decongestant tablets. Jack leaves the doctor's office and drives to his local drug store. The pharmacist packages the medication and types the labels for pill bottles. The label includes information about customer, the doctor who prescribe the drug, the drug (e.g., Penicillin), when to take it, and how often, the content of the pill (250 mg), the number of refills, expiration date, and the date of purchase."
Please develop a data model for the entities and relationships within the context of pharmacy. Also develop a definition for "prescription". List all your underlying assumptions used in your data models.

9. Northwind Database

10. A Business Form

11. An Informal Example of Normalization
A CUSTOMER ORDER contains the following information:
OrderNo
OrderDate
CustNo
CustAddress
CustType
Tax
Total
one or more than one Order-Item which has
ProductNo
Description
Quantity
UnitPrice
Subtotal.

12. Solution Unnormalized table 1st NF 2nd NF 3rd NF
(OrderNo, OrderDate, CustNo, CustAddress, CustType, Tax, Total,
1{ProductNo, Description, Quantity, UnitPrice,Subtotal}n)
Remove repeating group
(OrderNo, ProductNo, Description, Quantity, UnitPrice, Subtotal)
1st NF
Remove partial FD
2nd NF
(OrderNo, OrderDate, CustNo, CustAddress, CustType, Tax, Total)
Remove transitive FD
(OrderNo, ProductNo, Quantity, UnitPrice, Subtotal)
(ProductNo, Description, UnitPrice)
(OrderNo, OrderDate, CustNo, Tax, Total)
3rd NF
(CustNo, CustAddress, CustType)

13. JOIN and Aggregation Function
Show students ID, name, and GPA SELECT STUDENT.S_NO, STUDENT.NAME, Round(Avg(REGISTRATION.GRADE)*100)/100 AS AvgOfGRADE FROM STUDENT INNER JOIN REGISTRATION ON STUDENT.S_NO = REGISTRATION.S_NO GROUP BY STUDENT.S_NO, STUDENT.NAME; Or Format(Avg(REGISTRATION.GRADE), "###.00") AS AvgOfGRADE

14. Database(Access) vs. Spreadsheet (Excel)
Features
Database
Excel
Multi-user concurrent access/update to the data
Volume of the data
Complex relationships of various data
Calculation /formula among various data items
Business graph capability
Applications development tools

15. Auction Web Site's Data Model
Auction Web Site's Data Model