Question

我被指示设计一个表格，用户使用他们的用户名和给他们的特定PIN或密码登录。

每次PASSWORD使用次数计算且其使用限制为5次，3次后，PASSWORD或PIN将自动从数据库中删除。我也已经了解了存储过程。请帮我检查一下是否正确。

CREATE PROCEDURE [dbo].PinValidation
@Pin_no varchar(24),
@Reg_Num varchar(24),
@Session varchar(50),
@Tries INT,
@Program varchar(50)
AS
begin
SELECT Pin_no FROM PIN
WHERE Pin_no=@Pin_no
if @Reg_Num is not Null
BEGIN
IF NOT EXISTS (SELECT Reg_Num FROM PIN WHERE Reg_Num=@Reg_Num)
BEGIN
UPDATE PIN
SET Tries= Tries+1
WHERE Reg_Num=@Reg_Num--incrases the value of tries by 1 each time pin is used
SELECT @Tries[Tries]
end
ELSE
UPDATE PIN
SET Reg_num = @Reg_Num, P_Session=@Session, Tries=Tries+1, Program=@Program
Where Pin_no=@Pin_no --Updates database pin value for used pin on first usage
 end
 end
 If @Tries is not Null 
 BEGIN
if NOT EXISTS (SELECT Pin_no FROM PIN WHERE Pin_no=@Pin_no)
 BEGIN
 DELETE FROM [PIN ]
 WHERE  (( [Tries] = 3))--Check the Amount of times pin has been used if >3 delete entire pin row
 end
 end
 ELSE
 BEGIN
 SELECT -1
 END

Answer 1

将pin或pw存储为 String 或将其存储为具有2个比例的对象

public class pin {

    private int tries;
    private string pin;

}

然后每当您发现他们输入的引脚与DB中的引脚匹配后，您将1添加到pin.tries并检查它是否等于5或更大，如果是，则将其从数据库中删除。

如何在asp.net上的数据库中保存用户登录数

1 个答案: