GamerCentral
Christian Bauer
Assigned: 1/12/2012
Due: 4/26/2012
1
Table of Contents:
Introduction and Background
---
Pg 3
External Schema of the System
---
Pg 4
Entity - Relationship Diagram
---
Pg 5
Un-Normalized Relational Model
---
Pg 6
Normalization Process
---
Pg 7
Normalized Model
---
Pg 8
Data Dictionary
---
Pg 9
Create Statements
---
Pg 14
Insert Statements
---
Pg 22
View
---
Pg 30
Five Types of SQL Queries
---
Pg 32
Update Statements
---
Pg 37
Glossary
---
Pg 41
References
---
Pg 42
2
Introduction and background of domain:
Games Shopping System is a system that allows customers to search for available games
based on their favorite genre. The games are sold by the most recent release date to the oldest.
The system also shows the ratings for parents to see what game may be appropriate for their
children. Shoppers can create a wish list of what items they want and the system will send a
notification to when the game comes out or on sale.
Games can be in different genres and ratings. Wikipedia and ESRB. These genres and ratings
can be:

First person shooter

Third person shooter

Action

Adventure

Role playing

Strategy

Simulation

Sports

EC for early childhood 3 and older

E for everyone

E 10+ for 10 and older

T for teen 13 and older

M for mature 17 and older

AO for adults only 18 and older
3
A game is a form of entertainment for most people. It can be a social outlet to talk to other
gamers while playing a game. Gaming also helps kids becomes multitaskers and may lead to
technical careers.
External Schema:
GamerCentral contains the information of the Company, Employees, Customers and
Products. Company has a company name, company id, established date, street, city, state and
zipcode. Employees are identified by their id, last name, first name, designation, street, city,
state, phone number and zipcode. Customers are identified by their last name, first name, street,
city, state and zipcode. Products contain the id, name, category, price and weight.
General sentence
GamerCentral is an online system which helps people in selecting games which can be selected
based on the genre of game. The user will be impressed with purchased game or games that they
buy.
Sentence about Company
Company takes care of the employees, customers and the products. The company has a company
name, company id, established date, street, city, state and zipcode.
Sentence about Employees
Employees are the ones who work under the Company. Employees are identified by their id, last
name, first name, SSN, street, city, state and zipcode.
Sentence about Customers
Customers are the ones who purchase the products from the dealers. Customers are identified by
their last name, first name, street, city, state and zipcode.
Sentence about Product
Products are those which are for customers based on the genre of games and are divided by the id,
name, category, price and weight.
4
E-R Diagram:
Cust_last
Cust_First
category
name
id
name
Street
price
state
city
Customer
weight
Phone number
products
name
id
1
zipcode
1
N
has
Company
N
N
manages
street
id
Established date
city
has
zipcode
SSN
state
1
first
employees
street
name
last
city
state
zipcode
5
Un-Normalized model:
6
Cust_ID
Comp_ID
Cust_Fname
Cust_Lname
SSN
Cust_Phone
Cust_Street
Cust_City
Cust_State
Cust_Zip
Customer
numeric(20) <pk> not null
numeric(20) <fk> not null
varchar(20)
null
varchar(20)
null
numeric(20)
not null
numeric(20)
null
varchar(20)
null
varchar(20)
null
varchar(20)
null
varchar(20)
null
Comp_ID=Comp_ID
1:N
Company
Comp_ID
numeric(20) <pk> not null
Comp_Name varchar(20)
null
Est_Date
datetime
null
Comp_Street varchar(20)
null
Comp_City varchar(20)
null
Comp_State varchar(20)
null
Comp_Zip
varchar(20)
null
Comp_ID=Comp_ID
1:N
Product
Prod_ID
numeric(20) <pk> not null
Comp_ID
numeric(20) <fk> not null
Prod_Name
varchar(20)
null
Prod_Category varchar(20)
null
Prod_Price
varchar(20)
null
Prod_Weight varchar(20)
null
Comp_ID=Comp_ID
1:N
Emp_ID
Comp_ID
Emp_Fname
Emp_Lname
SSN
Emp_Street
Emp_City
Emp_State
Emp_Zip
Employee
numeric(20) <pk> not null
numeric(20) <fk> not null
varchar(20)
null
varchar(20)
null
numeric(20)
not null
varchar(20)
null
varchar(20)
null
varchar(20)
null
varchar(20)
null
7
Normalization Process:
For normalizing this model I have added an Address table. Normalization is a systematic way
of ensuring that a database structure is suitable for general-purpose querying and free of certain
undesirable characteristics that could lead to a loss of data integrity.
The customer, employee, and company tables have information such as Street, City, State
and Zip. I have created an address table in the normalized model that holds the information,
Street, City, State, Zip. For this table I have made Address_ID as the primary key and included
this in the Employee, Customer and Company tables as the foreign key. By doing this I was able
to reduce a lot of redundancy.
I also added a Code table which contains the Address Types, Designation of the Employee,
Product Category and Shipping Method. These values are maintained in the Address, Employee
and Product tables and connected using the Code_Id to the respective tables.
8
Normalized model:
Code
numeric(20) <pk> not null
numeric(20)
not null
varchar(20)
null
varchar(20)
null
Code_ID
Code_Type
Code_Desc
ShortDesc
Code_ID=Code_Type
0:N
Code_ID=Emp_Desi 1:1
Address_ID=Address_ID
Cust_ID
Comp_ID
Address_ID
Cust_Fname
Cust_Lname
SSN
Cust_Phone
Customer
numeric(20)
numeric(20)
numeric(20)
varchar(20)
varchar(20)
numeric(20)
numeric(20)
<pk> not null
<fk1> not null
<fk2> not null
null
null
not null
null
Code_ID=Add_Type
1:1
1:1
Address
Address_ID
numeric(20) <pk>
Add_Type
numeric(20) <fk>
Street
varchar(20)
City
varchar(20)
State
varchar(20)
Zip
varchar(20)
1:1
not null
not null
null
null
null
null
Address_ID=Address_ID 1:1
Address_ID=Address_ID
1:N
Comp_ID=Comp_ID
1:N
Comp_ID=Comp_ID
Comp_ID
Address_ID
Comp_Name
Est_Date
Company
numeric(20) <pk> not null
numeric(20) <fk> not null
varchar(20)
null
datetime
null
Emp_ID
Comp_ID
Address_ID
Emp_Fname
Emp_Lname
SSN
Emp_Type
Employee
numeric(20)
numeric(20)
numeric(20)
varchar(20)
varchar(20)
numeric(20)
numeric(20)
<pk> not null
<fk1> not null
<fk2> not null
null
null
not null
<fk3> not null
1:N
Comp_ID=Comp_ID
Prod_ID
Comp_ID
Prod_Name
Prod_Category
Prod_Price
Prod_Weight
Product
numeric(20) <pk> not null
numeric(20) <fk> not null
varchar(20)
null
varchar(20)
null
varchar(20)
null
varchar(20)
null
9
Data dictionary:
AddressTable
Name
DataType
Value set
(Domain)
Min
Cardinality
Max
Cardinality
Description
Address_Id
numeric(20)
Unique Integer
>=0
1
1
Primary key
Address_Type
varchar(20)
Character string
1
1
Address type
Street
varchar(20)
Character string
0
1
Street name
City
varchar(20)
Character string
0
1
City name
State
varchar(20)
Character string
0
1
State name
Zip
varchar(20)
Unique Character
string
0
1
Zip code of the place
Company table:
Name
DataType
Domain
Min
Cardinalit
y
Max
Cardinality
Description
Comp_Id
numeric(20)
Unique Integer
>=0
1
1
Primary key
10
Comp_Name
varchar(20)
Character string
1
1
Company name
Est_Date
Date
Sysdate
1
1
Established date of
the company
Address_Id
numeric(20)
Unique Integer
>=0
1
1
Foreign key
Customer table:
Name
DataType
Domain
Min
Cardinality
Max
Cardinality
Description
Cust_Id
Numeric(20)
Unique Integer
>=0
1
1
Primary key
Comp_Id
numeric(20)
Unique Integer
>=0
1
1
Foreign Key
Cust_Fname
varchar(20)
Character string
1
1
Customer First
name
Cust_Lname
varchar(20)
Character string
1
1
Customer Last
name
SSN
Numeric(20)
Unique Integer
>=0
1
1
Customer SSN
Cust_Phone
varchar(20)
Character string
1
N
Customer Phone
Address_Id
Numeric(20)
Unique Integer
>=0
1
1
Foreign key
Domain
Min
Cardinality
Max
Cardinality
Description
Employee table:
Name
DataType
11
Emp_Id
Numeric(20)
Unique Integer
>=0
1
1
Primary key
Comp_Id
numeric(20)
Unique Integer
>=0
1
1
Foreign Key
Emp_Fname
varchar(20)
Character string
1
1
Employee First
name
Emp_Lname
varchar(20)
Character string
1
1
Employee Last
name
SSN
Numeric(20)
Unique Integer
>=0
1
1
Employee SSN
Emp_Desi
varchar(20)
Character string
1
1
Employeee
Designation
Address_Id
Numeric(20)
Unique Integer
>=0
1
1
Foreign key
Name
DataType
Domain
Min cardinality
Max
Cardinality
Description
Prod_Id
Numeric(20)
Unique Integer
>=0
1
1
Primary key
Comp_Id
Numeric(20)
Unique Integer
>=0
1
1
Primary key
Prod_Name
varchar(20)
Character
string
1
1
Product Name
Prod_Category
varchar(20)
Character
string
1
N
Product
Category
Prod_Price
varchar(20)
Character
string
1
1
Product Price
Prod_Weight
varchar(20)
Character
1
1
Product Weight
Product table:
12
string
Code table:
Name
DataType
Min
Cardinality
Max
Cardinality
Description
Unique Integer
>=0
1
1
Synthetic Primary key
Value set
(Domain)
Code_ID
Numeric(10)
(Name of the sequence:
Seq_Code_Id)
Code_Type
Numeric(10)
Any integer >0
1
1
Type of the code
Code_Desc
Varchar(30)
Character string
0
1
Full description of the code
ShortDesc
Varchar(10)
Character string
1
1
The short representation of
code description
The values for the code table:
Code_ID
Code_Type
Description
Short_Description
1
1
To set a code type
TypeCode
2
1
For the type of address to show
Add_Type
3
1
Designation of the employee
Emp_Desi
4
1
Category of the product
Prod_Category
5
2
Company Address
Company
6
2
Employee Address
Employee
13
7
2
Customer Address
Customer
8
3
Employee Designation as Manager
Manager
9
3
Employee Designation as Cashier
Cashier
10
4
First Person shooter
fps
11
4
Strategy
rts
12
4
Role-playing
rpg
13
4
action
action
14
4
adventure
adventure
15
4
sports
sports
16
4
racing
racing
14
Create statements:
Creating Sequences
CREATE Sequence Seq_Code_ID Increment by 1 Start with 1 nocache;
CREATE Sequence Seq_Customer_ID Increment by 1 Start with 1 nocache;
CREATE Sequence Seq_Company_ID Increment by 1 Start with 1 nocache;
CREATE Sequence Seq_Employee_ID Increment by 1 Start with 1 nocache;
CREATE Sequence Seq_Product_ID Increment by 1 Start with 1 nocache;
CREATE Sequence Seq_Address_ID Increment by 1 Start with 1 nocache;
15
Creating Tables
Creating Code table
CREATE TABLE Code
(
Code_ID
NUMBER (20) not null,
Code_Type
NUMBER (20) not null,
Description
VARCHAR (20) null,
Short_Description
VARCHAR (20) not null,
Constraint PK_CodVal PRIMARY KEY (Code_ID),
16
Constraint FK_CodType FOREIGN KEY (Code_Type) references Code (Code_ID)
);
Creating Address table
CREATE TABLE Address
(
Address_ID
NUMBER (20) not null,
Add_Type
NUMBER (20) not null,
Street
VARCHAR (20) null,
City
VARCHAR (20) null,
State
VARCHAR (20) null,
17
Zip
VARCHAR (20) null,
Constraint PK_Addresses PRIMARY KEY (Address_ID),
Constraint FK_AddressesType FOREIGN KEY (Add_Type) references Code(Code_ID)
);
Creating Company Table
CREATE TABLE Company
(
Comp_ID
NUMBER (20)
not null,
Address_ID
NUMBER (20)
not null,
18
Comp_Name
VARCHAR (20)
null,
Est_date
DATE
null,
Constraint PK_Compan PRIMARY KEY (Comp_ID),
Constraint FK_Addr FOREIGN KEY (Address_ID) references Address(Address_ID)
);
Creating Customer Table
CREATE TABLE Customer
(
Cust_ID
NUMBER (20)
not null,
19
Comp_ID
NUMBER (20)
not null,
Address_ID
NUMBER (20)
not null,
Cust_Fname
VARCHAR (20)
null,
Cust_Lname
VARCHAR (20)
null,
SSN
NUMERIC (20)
null,
Cust_Phone
NUMERIC (20)
null,
Constraint PK_customerin PRIMARY KEY (Cust_ID),
Constraint FK_Company_cust FOREIGN KEY (Comp_ID) references Company(Comp_ID),
Constraint FK_Addr_Cust FOREIGN KEY (Address_ID) references Address(Address_ID)
);
20
Creating product Table
CREATE TABLE Product
(
Prod_ID
NUMBER (20)
not null,
Comp_ID
NUMBER (20)
not null,
Prod_Name
VARCHAR (20)
null,
Prod_Category
VARCHAR (20)
null,
Prod_Price
NUMBER (20)
null,
Prod_Weight
VARCHAR (20)
null,
Constraint PK_ProductGift PRIMARY KEY (Prod_ID),
Constraint FK_CompanyGift FOREIGN KEY (Comp_ID) references Company (Comp_ID)
);
21
Creating Employee Table
CREATE TABLE Employee
(
Emp_ID
Comp_ID
Address_ID
NUMBER (20)
not null,
NUMBER (20)
NUMBER (20)
not null,
not null,
Emp_Fname
VARCHAR (20)
null,
Emp_Lname
VARCHAR (20)
null,
SSN
Emp_Desi
NUMERIC (20)
NUMERIC (20)
null,
not null,
22
Constraint PK_Employer PRIMARY KEY (Emp_ID),
Constraint FK_Company FOREIGN KEY (Comp_ID) references Company(Comp_ID),
Constraint FK_Address FOREIGN KEY (Address_ID) references Address(Address_ID),
Constraint FK_Designation FOREIGN KEY (Emp_Desi) references Code(Code_ID)
);
Insert code statements
INSERT INTO code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Code_ID_Seq.NextVal, 1, 'code_type', 'TypeCode' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 1, 'address_type', 'Add_Type');
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 1, 'employee_designation', 'Emp_Designation' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 1, 'product_category', 'Prod_Cat');
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 2, 'company address', 'Comp_Addr' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 2, 'employee address', 'Emp_Addr' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 2, 'customer address', 'Cust_Addr' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 3, 'manager', 'Manager' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 3, 'cashier', 'Cashier' );
23
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'First Person Shooter', 'FPS' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'Real time strategy', 'RTS' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'Role playing game', 'RPG' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'action', 'ACTION' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'adventure', 'ADVENTURE' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'sports', 'SPORTS' );
INSERT INTO Code (CODE_ID, CODE_TYPE, CODE_DESC, SHORTDESC)
VALUES ( Seq_Code_ID.NextVal, 4, 'racing', 'RACING' );
24
Address insert statements
INSERT INTO Address Values ( Seq_Address_ID.NextVal, 2, 'Rockhill Road', 'Kansas City', 'MO', '64110' );
INSERT INTO Address Values ( Seq_Address_ID.NextVal, 2, 'Charlotte Street', 'Kansas City', 'MO', '64108' );
INSERT INTO Address Values ( Seq_Address_ID.NextVal, 2, 'NW plaza circle', 'Kansas City', 'MO', '64153' );
INSERT INTO Address Values ( Seq_Address_ID.NextVal, 2, 'Canvasback Drive', 'Suisun City', 'CA', '94585' );
25
Company insert statements
INSERT INTO Company Values ( Seq_Company_ID.NextVal, 1 , ’Games R Us’, ’21 Feb 2008’);
INSERT INTO Company Values ( Seq_Company_ID.NextVal, 2 , ‘ We Are Gamers‘, ’22 Mar 2006’);
INSERT INTO Company Values ( Seq_Company_ID.NextVal, 3 , ’Gamestop’, ’2 Feb 2005’);
INSERT INTO Company Values ( Seq_Company_ID.NextVal, 4 , ’Steam’, ’11 Jan 2007’);
26
Customer insert statements
INSERT INTO Customer Values ( Seq_Customer_ID.NextVal, 1, 1 , ‘Christian’, ’Bauer’, ’11111’, ’8161234567’);
INSERT INTO Customer Values ( Seq_Customer_ID.NextVal, 2, 2 , ‘Kelly’, ’Kerns’, ’23456’, ’9132324444’);
INSERT INTO Customer Values ( Seq_Customer_ID.NextVal, 1, 3 , ‘Mike’, ’Jones’, ’22222’, ’7075673456’);
INSERT INTO Customer Values ( Seq_Customer_ID.NextVal, 1, 4 , ‘John’, ’Smith’, ’213456’,
’4175324576’);
27
Employee insert statements
INSERT INTO Employee Values ( Seq_Employee_ID.NextVal, 1, 1 , 'Bob', 'Smith', '12345', 9);
INSERT INTO Employee Values ( Seq_Employee_ID.NextVal, 1, 2 , 'Jerry', 'Springer', '23234', 10);
INSERT INTO Employee Values ( Seq_Employee_ID.NextVal, 2, 3 , 'John', 'Maury', '212456', 9);
INSERT INTO Employee Values ( Seq_Employee_ID.NextVal, 3, 2 , 'Rikki', 'Lake', '212323', 10);
INSERT INTO Employee Values ( Seq_Employee_ID.NextVal, 4, 4, 'Rebbecca', 'Foster', '24452', 9);
28
product insert statements
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 1, ‘Fallout’, 13, ’1000’, ’156’);
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 2, ‘MLB2k12’, 15, ’1200’, ’170’);
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 1, ‘Gran Turismo 4’, 16, ’1350’, ’163’);
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 3, ‘Final Fantasy 13’, 12, ’1000’, ’156’);
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 3, ‘Kessen 3’, 11, ’1000’, ’156’);
INSERT INTO Product Values ( Seq_Product_ID.NextVal, 3, ‘Resistance 3’, 10, ’1000’, ’156’,);
29
30
Creating a view
This view will show the customers and the games they will want, which can help with marketing.
CREATE VIEW PRODUCTDETAILS
AS
SELECT C.Cust_FName,
P.Prod_ID,
P.Prod_Name,
C.Cust_phone
FROM Customer C,
Product P;
31
32
Queries
Select sum(Prod_Price) "Price for game", count(Comp_ID) "Number of Products"
from Product group by Prod_Price having Sum(Comp_ID)>0;
33
Select Prod_ID, Prod_Name, Prod_Category
from Product
where Prod_ID
IN(select Prod_ID from Product where Comp_ID=(select Comp_ID from Product
where Comp_ID=2));
34
SELECT ad.Street, ad.City, ad.State, ad.Zip, C.Cust_ID "Customer Id",
C.Cust_FName "FirstName", C.Cust_LName "LastName", C.SSN "SSN number"
FROM
Address ad
LEFT OUTER JOIN Customer C
ON
ad.Address_ID = C.Address_ID;
35
SELECT ad.Street, ad.City, ad.State, ad.Zip, e.Emp_ID "Employee Id",
e.Emp_FName "FirstName", e.Emp_LName "LastName", e.SSN "SSN number"
FROM
Address ad
LEFT OUTER JOIN Employee e
ON
ad.Address_ID = e.Address_ID;
36
Select street, city, state,zip
from Address ad
INNER JOIN Employee e
ON ad.Address_id=e.Address_id;
37
Update statements
update Product set Prod_Price = 2000 where Prod_ID=3;
38
39
update Product set Prod_name = 'MLB2k13' where Prod_ID=3;
40
41
Glossary:
1. Company: A number of individuals assembled or associated together.
2. Customer: Is the buyer or user of the paid products of an individual or organization, mostly
called the supplier or seller.
3. Product: A thing produced by labor.
4. Employee: Technically productive enterprises in a particular field.
42
References:
http://www.sa-academy.org/atf/cf/%7B6bc3c885-b60d-4891-96ff08fa2146034d%7D/POSITIVES%20OF%20GAMING%20OUR%20KIDS%20MAG%20JULY%2009.P
DF
http://www.esrb.org/ratings/ratings_guide.jsp
http://en.wikipedia.org/wiki/Video_game_genres
43
Statement:
I, Christian Bauer hereby declare that all the work done for this project is of my
own except as noted in the provided references and has no unreferenced information
included.
44
Signature
Date: 4/26/2012
45