text: --15. Write a SQL statement to create a table Users. Users should have username, password, full name and last login time.
  --    Choose appropriate data types for the table fields. Define a primary key column with a primary key constraint.
  --    Define the primary key column as identity to facilitate inserting records.
  --    Define unique constraint to avoid repeating usernames.
  --    Define a check constraint to ensure the password is at least 5 characters long.
  
  
  USE TelerikAcademy
  
  CREATE TABLE dbo.Users 
  (	UserID int IDENTITY,
  	Username nvarchar(50) NOT NULL CONSTRAINT UK_Username UNIQUE,
  	Password nvarchar(50),
  	FullName nvarchar(100) NOT NULL,
  	LastLoginTime datetime,
  	CONSTRAINT PK_Users PRIMARY KEY(UserID),
  	CONSTRAINT CK_Password CHECK(LEN(Password)>=5),
  )
  GO
  