Three-tier architecture proposal (who has made this item ready-made and has applied the actual system, you can quote a price! Thank you)

Three-tier architecture proposal (who has made this item ready-made and has applied the actual system, you can quote a price! Thanks) Delphi/Windows SDK/API
Http://www.delphi2007.net/DelphiDB/html/delphi_20061215172915286.html
Three-layer architecture
1. Connect to the server in real time and store data on the server in a centralized manner. All clients can only connect to the server to call server data. Ensure that 200 people can run smoothly online.
Ii. functions:
1. Take the "employee database" in the "MSSQL sample data training" pubs as an example to add, delete, modify, and query data.
2. The client can manage online users and query user IDs, user names, computer IP addresses, computer names, logon times, and departure times to kill an online user.
3. servers with fixed IP addresses can also be used for parsing without fixed IP addresses using peanut shells.
3. The client business module uses DLL to call the module DLL by the EXE file.
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Who has a ready-made item and has applied the actual system? You can pay a price! Thank you.

I have a three-tier structure that can be called repeatedly. It is an inventory management system, but it has not been completed yet. I have to log on and manage permissions. Do you want?

Can I remotely show it to me?

If you can add my QQ: 329092565 mobile phone: 13960476705

ProgramI am not in the dormitory, but I am afraid that I cannot show it to you now. Or wait until we finish class at to show it to you!

Have you actually applied this to the system?
Can you tell me what development-based

Delphi-database. It's useless. I haven't done it yet.

Wait for you to contact me

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Check out Eco...
You can contact me for customized development.

The paper and footwear software I wrote is very consistent with yours.

QQ: 83328047

This is what I can provide. A project I create is basically the same as what you want.

Users cannot be kicked.
But there is a data connection pool, if you need to demonstrate.
All the base classes use SQL scripts to submit data,
QQ: 830490
Getchar # 163.com

Thank you. Please contact QQ for a demonstration.

Haha... I have

Contact me if you have any. I won't keep my eye on it, Big Brother!

Self-built top

Haha... Sorry, unfortunately I don't sell any money, just to my sincere friends.

I have one, Socket Layer-3, but it cannot be kicked,

Dbexpress + Firebird is used for demonstration.