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use BlogDB
create table Categories
(
Id int primary key identity,
[Name] nvarchar(50) unique
)
create table Tags
(
Id int primary key identity,
[Name] nvarchar(50) unique
)
create table Users
(
Id int primary key identity,
Username nvarchar(50) unique Not NUll,
Fullname nvarchar(50) not null,
Age int not null,
Check(Age<150 and Age>0)
)
insert into Users
Values('Miri','Miri',19),
('Rafa','Xalid',19 )
Create table Comments
(
Id int primary key identity,
Content nvarchar(250) not null,
UsersID int foreign key references Users(Id),
BlogsID int foreign key references Blogs(Id)
)
Create table Blogs
(
Id int primary key identity,
Title nvarchar(50) not null,
[Description] nvarchar(200) not null,
UsersID int foreign key references Users(Id),
CategoriesID int foreign key references Categories(Id)
)
create table BlogsTags
(
Id int primary key identity,
TaglarID int foreign key references Taglar(Id),
BlogID int foreign key references Blogs(Id)
)
create table Taglar
(
Id int primary key identity,
[Name] nvarchar(50) not null
)
select Blogs.Title,Users.Username,Users.Fullname from Users
join Blogs
On Blogs.UsersID=Users.Id
select Blogs.Title,Categories.Name from Blogs
join Categories
On Blogs.CategoriesID=Categories.Id
|
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