3-TIER ARCHITECTURE IN ASP.NET MVC

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Live Project - Web Appon Asp.Net MVC

- Mohd Manzoor Ahmed (MCTS, MCPD & MCT)

www.manzoorthetrainer.com

http://www.manzoorthetrainer.com/

http://goo.gl/iMulis



Project Plan

● Understanding Requirements and Database Design.● Creating Solution and Adding projects to It.● Creating The business Objects.● Creating Data Access Layer in EF.● Creating Business Logic Layer in C#.Net.● Creating Presentation Logic Layer in MVC5.● Designing Models, Controllers and Views.● Business Rules Validations.● Securing Your App.● Implementing Transactions.● Ajaxifying Your App.● Conclusion And Feedback





Finalized Requirements

Link hub is a web portal where a user can submit their portal URL under a specific category to be shared on link hub. Admin can approve or reject the URL submitted by the user and in each case an email is sent out to the user. Once the link is approve it will be available on the link hub portal under a specific category.





Defining the Roles & Responsibilities

Roles:

• Usero Can Browse URLso Can Registero Can Submit A URL

• Admino Can CRUD Category o Can View All Userso Can ApproveOrReject URL





Identifying the Objects

• User

• Category

• Url





Creating The Relationships

• Category : Url 1--------------------> n

n--------------------> 1 (X)

n--------------------> n (X)

o (1:M)






• User : Url 1--------------------> n

n--------------------> 1 (X)

n--------------------> n (X)

o (1:M)






• Objectso Usero Categoryo Url

• Relationships

o Category : Url (1:M)

o User : Url (1:M)





3 Key Rules For Database Design

1. One table for each object

2. For 1:M relationship. 1 will become master and M will become child i.e., primary key of 1 will act as a foreign key for M.

Eg:Department : Employees is 1 : M

Department Table

Did

DName

Description

Employee Table

Eid

EName

ESalary

Did





3 Key Rules For Database Design

3. M:M relationship. Both the objects will become master and there will be one more new table called as transaction table or child table with primary keys of masters as foreign Keys in it.

Eg:Student : Course is M : M

Student Table

Sid

SName

SAddress

Course Table

Cid

CName

Description

Student_Course Table

SCId

Sid

Cid





Designing Database

tbl_Category

CategoryId

tbl_Url

UrlId

UId

CategoryId

tbl_User

UId

Role





Implementing DatabaseLets go and Implement





Inserting Dummy RecordsLets go and Insert dummy and meaningful records





Design Project Arch.

DALAdo.Net

EF

Result c

BLLC#.Net

c=a+b

UIAsp.Net

MVC

a=10;b=20;

show c

DatabaseMS SQL

Business Objects (BO)





Design Project Arch.

● UI● BLL● DAL● BOL





Creating Solution and Adding projects to ItLets go and implement it





Creating The business ObjectsBasically a business object layer contains classes equivalent to the tables i.e.,

one class for each table.Eg:If I have a department table

tbl_Department (Relation)

Did

DName

Description

\\Objectclass tbl_Department {Public int Did {get;set;}Public string DName {get;set;}Public string Description {get;set;}}

i.e., O/R M

Lets go and implement it





Creating The business Objects - Relationship(1:M)

\\Objectclass tbl_Deptartment{public int Did {get;set;}public string DName {get;set;}public string Description {get;set;}public virtual List<tbl_Employee> tbl_Employees {get;set;}}

tbl_Department

Did

DName

Description

tbl_Employee

Eid

EName

ESalary

Did

\\Objectclass tbl_Employee{public int Eid{get;set;}public string EName {get;set;}public double Esalary {get;set;}public int Did{get;set;}public virtual tbl_Department {get;set;}}





Creating The business Objects - Relationship(M:M)

tbl_Student

Sid

SName

SAddress

tbl_Course

Cid

CName

Description

tbl_Student_Course

SCId

Sid

Cid





Creating The business Objects - Relationship(M:M)

\\Objectclass tbl_Student{public int Sid{get;set;}public string SName {get;set;}public string Address {get;set;}public virtual List<tbl_Student_Course> tbl_Student_Courses {get;set;}}

\\Objectclass tbl_Course{public int Cid{get;set;}public string CName {get;set;}public string CDescription {get;set;}public virtual List<tbl_Student_Course> tbl_Student_Courses {get;set;}}

\\Objectclass tbl_Student_Course{public int SCid{get;set;}public int Sid {get;set;}public int Cid {get;set;}public virtual tbl_Student {get;set;}public virtual tbl_Course {get;set;}}





Creating Of UI/PL

DALAdo.N

etEF

Result c

BLLC#.Net

c=a+b

UIAsp.Net

a=10;b=20;

show c

DatabaseMS SQL


DatabaseMS SQL


UIAsp.Net

MVC

a=10;b=20;

show c





Roles & Responsibilities

Roles:

• Usero Can Browse URLso Can Registero Can Submit A URL

• Admino Can CRUD Category o Can View All Userso Can ApproveOrReject URL





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