In this Business Analysis Training, you will learn ER Diagrams. Topics covered in this session are:
• Entity and Relationship
• ER Components
• Association
• Cardinality
• One To One (1 : 1)
• One To Many Relation Ship (1 : N )
• Many to One Relation Ship (N : 1)
• Many To Many Relation Ship ( M : N )
• E-R Dig Of Banking Enterprise
For more information, click on this link:
https://www.mindsmapped.com/courses/business-analysis/fundamentals-of-business-analysis/
2. Page 2Classification: Restricted
Agenda
• Entity and Relationship
• ER Components
• Association
• Cardinality
• One To One (1 : 1)
• One To Many Relation Ship (1 : N )
• Many to One Relation Ship (N : 1)
• Many To Many Relation Ship ( M : N )
• E-R Dig Of Banking Enterprise
3. Page 3Classification: Restricted
Entity and Relationship
• Entity - It’s Real time Object Any Thing In The World.
Ex : Pen, Pencil, Book, Fan, Man
• Attribute : Properties Of That Entity Is Called as Attribute.
Ex : Color, Size, length, width
• Relationship : Maintain The Relation Ship Between 2 Entity sets.
• Attribute Types:
• Simple & Composite Attributes : Name( First , Middle, last Names)
• Single & Multi Valued Attributes : Contact Number ( Country Code,
Area code , Number)
• Derived Attributes : It Can Be Computed From others : (Age, Date Of
Birth)
6. Page 6Classification: Restricted
Cardinality
No Of occurrences of an object related to number of occurrences of other
objects.
• 1:1 (SSN and US citizen OR Person and Car)
• 1:M ( Order and Items – One order has many items)
• M:1 (Emp and Dept)
• M:M (Faculty and Students OR Loans and customer)
7. Page 7Classification: Restricted
One Citizen can have utmost 1 SSN
1 SSN is associated with NOT more than 1
Citizen SSNAssociates
One To One (1 : 1)
10. Page 10Classification: Restricted
Faculty Studentteaches
Many To Many Relation Ship ( M : N )
• One Faculty teaches Many Students
• One Student is taught by many teachers in a school
11. Page 11Classification: Restricted
ACCOUNT BRANCH
CUSTOMER LOAN
ACCOUNT
-BRANCH
Deposit
or
Loan-
Branch
Borrow
Account
-No
Account
-Name
Branch
-No B-City
C-
Name
C-
Address
Loan-
No
Amount
E-R Dig Of Banking Enterprise