Database design - MySQL database integration of two systems

1. There are currently systems A and B, and B is the upgraded system of A; 2. The structure of most database tables in the two versions of the system mysql database is the same, and the data of A can be directly integrated into another system B; but there is still Some tables have different structur...

巴扎黑 2017-05-18 10:54:00 0  3  888

The Linux system does not support PHP operations to access the database. Can you please advise on other solutions?

The database of Windows computer software is accessible. If you want to share data, upload the database mdb file to the web server through php, and then php reads the mdb database into html. When the web server is windows, the test is normal. The Linux system does not support PHP operations to acces...

forever 2017-10-31 14:35:35 0  1  1059

java - In order to avoid the complex one-to-many-to-many relationship in the database, I designed the database without foreign keys. Is this possible?

In order to avoid the complex one-to-many-to-many relationship in the database, I designed the database so that the fields in the table have no foreign keys, and the relationships are manually related using setters and getters. However, after writing the program, the function can be implemented, but...

为情所困 2017-05-17 10:08:09 0  5  580

Please send the teacher =TP6.0 to build a database for personal blog practice (Jade Girl Heart Sutra version)! Thanks

TP6.0 builds a database for personal blog practice (Jade Girl Heart Sutra version)! And complete source code for demonstration! Thanks again! !

王世山 2020-10-08 15:35:02 0  2  1153

Use UserModel::where('id',$id)->data($data)->update() to update data, the system will report an error

Use UserModel::where('id',$id)->data($data)->update() to update data. The system will report an error. Unsupported data expression:/admin/user/doedit_html

王先生 2019-11-18 11:33:33 0  2  1523

How does the online book management system allow users to find and operate their own data tables based on usernames?

For example, in an online book management system, if users perform addition, deletion, modification, and search operations, how can the user generate a data table of his own for each addition, deletion, modification, and search operation after successfully registering? How can the user find the corr...

phpcn_u30422 2018-08-23 22:16:49 1  1  1569

Teacher Wei Xiaobao's practical teaching of TP basics

Teacher Wei Xiaobao’s practical teaching on TP basics is very good. I just asked him if the data in the database Mysql of his mobile teaching system could be sent to me, otherwise the system would not be able to enter. I would also make a database that matches his system. It’s unrealistic. Teacher, ...

笑忘猪 2020-06-08 19:56:02 0  1  1320

ErrorException: Undefined array key 'name' in file

I'm working on a customer management system that also tracks customer orders. I have set up a CRUDAPI to handle reading and writing the backend database data, but when I try to POST the shopping cart data to the database, I get the following error. quote Error parsing JSON from response: SyntaxError...

P粉187677012 2023-08-31 10:33:00 0  1  583

PHPOA open source collaborative OA office system v4.0

If anyone has the database of this system, please provide it 826622679@qq.com

Leo 2017-09-02 16:53:46 0  2  1812

How to use multiple databases in Laravel

I want to combine multiple databases in my system. Most of the time the database is MySQL; but it may be different in the future, i.e. the administrator can generate such reports, this is the source of using heterogeneous database systems. So my question is does Laravel provide any Facade to handle ...

P粉919464207 2023-10-13 09:54:58 0  2  665

java - Spring operation database displays garbled Chinese characters?

Operating system: ubuntuIDE:idea Database:Mysql When I use php to operate the database, there is no problem with Chinese display, and Chinese can be displayed normally: But when I am learning spring, when I operate the database, question marks will appear in Chinese, and it cannot be displayed norma...

我想大声告诉你 2017-05-16 13:29:37 0  1  550

Validation rules for laravel form form validation

In laravel, when verifying whether fields are repeated, the following {code...} is verified. unique:users queries whether there are duplicates in the users table; but this is an operation on a single database; and what the current system needs to verify is not what I want. Database {code...} In data...

怪我咯 2017-05-16 16:55:44 0  2  570

Help me see what's going on. Thanks

What I saw yesterday was that when submitting information to the 'Student Relations System', the page did not jump and the database did not receive the information. I don’t know how to solve the problem, because the information in the video can only be seen in the database. I really couldn’t figure ...

百乐鞋吧 2017-07-04 17:21:19 0  1  1025

mysql - Why does database read-write separation improve database performance?

Please see the blog above for why read-write separation can improve database performance. According to database common sense, read-write separation can indeed improve database performance, but you don't know if you understand its underlying principles. For example, one reads and one writes, but the ...

PHPz 2017-05-24 11:34:46 0  2  1341

Can Adminer be used on Mac OS?

Although I use navicate and phpMyAdmin to manage the database, I don’t know how to use Adminer. Can it be used on Mac OS system? Although I use navicate and phpMyAdmin to manage the database, I don’t know how to use Adminer. Can it be used on Mac OS system? Although I use navicate and phpMyAdmin to ...

去如烟 2019-04-09 00:41:23 0  2  1241

Migrate data from one database to another

I need to migrate data from one database to another, both on the same local system. The table and column names are different and I don't have to migrate all the columns from the old database, so Select* doesn't work for me. INSERTINTONewDatabase.table1(Column1,Column2);SELECToldDatabase.table1(colum...

P粉509383150 2023-08-24 09:58:47 0  2  699

php - Looking for guidance on the solution to `Can't initialize character set XXXX`

I originally wrote a project using thinkphp5. In order to solve the emoji problem, the database character set used utf8mb4, which ran well on the server at that time. Recently due to some reasons it was necessary to transfer the entire system to a new server. But after importing the original databas...

PHP中文网 2017-06-13 09:21:30 0  1  757

Performance Optimization - How to optimize apache under windows, improve concurrency, and withstand more access? (Production Environment)

Due to historical reasons, our system is deployed on windows server and apache is used as a web service. and cannot be replaced. Current situation: Another department pushes data to our system through API, we receive the data and then store it in the database. The problem encountered is: the amount ...

仅有的幸福 2017-05-16 17:04:03 0  2  735

How to solve the following problems

ORA-01589: must use RESETLOGS or NORESETLOGS option for database open. The ORACLE database virtual machine was cloned. The database was not closed during cloning. When the cloning was completed, an error occurred and the database was enabled and could not be started. Reason: The database stopped abn...

薛冬冬 2021-04-07 16:53:00 0  0  960

How high can the peak number of Apache concurrent connections per second be on a single machine?

PC configuration, memory 2G, CPU 1.7GHZ. Connections include: static and dynamic data, downloads, database operations, etc. Systemlinux

淡淡烟草味 2017-05-16 17:04:44 0  2  512