如何使java程序更新数据库中的文档并让管理员权限将其上载到数据库中？ [英] How do I make a java program to update documents in a database and to have the administrators permission for it to b uploaded in the database?

问题描述

We have to make a dummy database that will store documents.  A User Interface Shoud be there containing options 
1)display pdf doc 
2)update pdf doc.
 After the user logins. For the update option, the user will upload the doc or the changes in the doc and then that changes/doc should go to the administrator for their approval and then it will be updated. The old doc then go to the archives in another database.

我尝试过：



i已经尝试了但是我无法执行所需的任务

What I have tried:

i have tried it but i m not able to perform the required task

推荐答案

我们不做你的作业：它是有原因的。它就是为了让你思考你被告知的事情，并试着理解它。它也在那里，以便您的导师可以识别您身体虚弱的区域，并将更多的注意力集中在补救措施上。



亲自尝试，你可能会发现它不是和你想的一样困难！

首先阅读问题，然后将其分解为较小的任务。如果你可以做其中的一个，那么做，测试，继续前进。如果您无法执行任务，请将其分解为较小的任务，然后重试。但是从规范/问题中找出要做的事情是任务的一部分！



如果遇到特定问题，那么请询问一下，我们会做最好的帮助。但我们不打算为你做这一切！

We do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action.

Try it yourself, you may find it is not as difficult as you think!
Start by reading the question, and break it down into smaller tasks. If you can do one of those, then do it, test it, and move on. If you can't do a task, break it down into smaller tasks, and try again. But working out what to do from the specification / question is part of the task!

If you meet a specific problem, then please ask about that and we will do our best to help. But we aren't going to do it all for you!

引用：

我试过了但是我无法执行所需的任务

i have tried it but i m not able to perform the required task

要在这里获得一些帮助，你必须展示你的工作并解释你遇到的问题。

HomeWork问题是你必须在现实生活中解决的问题的简化版本，他们的目的是学习和练习。



我们不做你的HomeWork。

HomeWork不会测试你乞求别人做你的工作的技巧，它是让您思考并帮助您的老师检查您对所学课程的理解以及您应用这些课程时遇到的问题。

你的任何失败都会帮助你的老师发现你的弱点并设定补救措施。

你的任何失败都会帮助你了解什么有效，什么无效，被称为'试错'学习。

所以，试一试，重读课程并开始工作。如果您遇到特定问题，请展示您的代码并解释这个问题，我们可能会提供帮助。

To get some help here, you must show your work and explain the problem you have.
HomeWork problems are simplified versions of the kind of problems you will have to solve in real life, their purpose is learning and practicing.

We do not do your HomeWork.
HomeWork is not set to test your skills at begging other people to do your work, it is set to make you think and to help your teacher to check your understanding of the courses you have taken and also the problems you have at applying them.
Any failure of you will help your teacher spot your weaknesses and set remedial actions.
Any failure of you will help you to learn what works and what don't, it is called 'trial and error' learning.
So, give it a try, reread your lessons and start working. If you are stuck on a specific problem, show your code and explain this exact problem, we might help.

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