Er diagram practical examples

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Rahul Khanwani

Tecnologia Negócios

Entity
Weak Entity
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Key Attribute
Composite
_________
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Derived Attribute
Multi valued Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Entity
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name
Attributes
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Birth Date Age Salary
Key AttributeRahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Address Age Salary
Composite
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Address Age Salary
Multi Valued
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Address Age Salary
Single Valued
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Address Fax No /
Tele. No
Salary
Null Valued
AttributeRahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Birth Date Age Salary
Derived
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Table: Employee
Employee
number
Name Birth Date Age Salary
Stored
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Entity
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Attributes
Emp_no
Birth Date
Age
Salary
Name
Rahul Khanvani Binarybuzz.Wordpress.com

Key
Attribute
Emp_no
Employee
Birth Date
Salary
Name
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Key
Attribute
Emp_no
Birth Date
Salary
Name
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Emp_no
Name
Salary
Name
Multi valued
Attribute
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Multi valued
Attribute
Emp_no
Name
Salary
Name
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Address
Composite
AttributeRahul Khanvani Binarybuzz.Wordpress.com

Employee
Name
Composite
Attribute
Street
Address
Area
City
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Emp_no
Birth Date
Age
Salary
Name
Derived
Attributes
Rahul Khanvani Binarybuzz.Wordpress.com

Employee
Derived
Attributes
Emp_no
Birth Date
Age
Salary
Name
Rahul Khanvani Binarybuzz.Wordpress.com

RelationshipWorks
Link
Rahul Khanvani Binarybuzz.Wordpress.com

Manager
Mno Name
Salary
Birth
Date
Department
Mno Dname
Works
11
1 To 1 RelationshipRahul Khanvani Binarybuzz.Wordpress.com

Employee
Empno Name
Salary
Birth
Date
Department
Empno Dname
Works
1M
Many To 1 RelationshipRahul Khanvani Binarybuzz.Wordpress.com

Employee
Empno Name
Salary
Project
PId Ptype
Works
NM
Many To Many Relationship
Start
date
End
date
Rahul Khanvani Binarybuzz.Wordpress.com

ER Diagram Of Banking System
Bank
Bank
branch
Branc
hes
Account
Acct no
Balanc
e
Acc
Type
Accts Loans
Loan
Loan
no
Amount
Loan
Type
1 M
1
M
1
M
Bno Addr
Nam
e
Code Addr
Rahul Khanvani Binarybuzz.Wordpress.com

Continue… Account Loan
Customer
SSn
Name
Addres
s
A_c L_c
n
M
n
M
Phone
Rahul Khanvani Binarybuzz.Wordpress.com

Thank You…
Rahul Khanvani
Binarybuzz.Wordpress.com

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