请教个问题:通过sqlserver订阅发布来实现读写分离合理吗?
为减轻中心数据库服务器压力,前置数据库服务器与中心数据库服务器数据交互实行读写 分离 。因此,需要多台数据库服务器进行支撑,将数据库服务器分为主数据库服务器、从数据库服务器。 主数据库服务器主要负责写操作,各个场馆的前置数据库服务器发送数据同
为减轻中心数据库服务器压力,前置数据库服务器与中心数据库服务器数据交互实行读写分离。因此,需要多台数据库服务器进行支撑,将数据库服务器分为主数据库服务器、从数据库服务器。
主数据库服务器主要负责写操作,各个场馆的前置数据库服务器发送数据同步请求(上传)时,主动选择主数据库服务器执行数据更新(插入、更新)命令。
主数据库服务器与从数据库服务器之间,是一个订阅与发布的关系。主数据库服务器发布指定的表,从数据库服务器数据库订阅主数据库服务器发布的表,实现数据库之间的同步。所有数据只有insert、update操作,没有delete操作。
从数据库服务器主要负责读操作,前置数据库服务器发送数据请求(下载)时,主动选择从数据库服务器读取符合条件的数据,下载到前置数据库服务器进行更新操作。

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For objects with the same name that already exist in the SQL Server database, the following steps need to be taken: Confirm the object type (table, view, stored procedure). IF NOT EXISTS can be used to skip creation if the object is empty. If the object has data, use a different name or modify the structure. Use DROP to delete existing objects (use caution, backup recommended). Check for schema changes to make sure there are no references to deleted or renamed objects.

The import steps are as follows: Copy the MDF file to SQL Server's data directory (usually C:\Program Files\Microsoft SQL Server\MSSQL\DATA). In SQL Server Management Studio (SSMS), open the database and select Attach. Click the Add button and select the MDF file. Confirm the database name and click the OK button.

When the SQL Server service fails to start, here are some steps to resolve: Check the error log to determine the root cause. Make sure the service account has permission to start the service. Check whether dependency services are running. Disable antivirus software. Repair SQL Server installation. If the repair does not work, reinstall SQL Server.

To view the SQL Server port number: Open SSMS and connect to the server. Find the server name in Object Explorer, right-click it and select Properties. In the Connection tab, view the TCP Port field.

SQL Server database files are usually stored in the following default location: Windows: C:\Program Files\Microsoft SQL Server\MSSQL\DATALinux: /var/opt/mssql/data The database file location can be customized by modifying the database file path setting.

If you accidentally delete a SQL Server database, you can take the following steps to recover: stop database activity; back up log files; check database logs; recovery options: restore from backup; restore from transaction log; use DBCC CHECKDB; use third-party tools. Please back up your database regularly and enable transaction logging to prevent data loss.

How to implement dual WeChat login on Huawei mobile phones? With the rise of social media, WeChat has become one of the indispensable communication tools in people's daily lives. However, many people may encounter a problem: logging into multiple WeChat accounts at the same time on the same mobile phone. For Huawei mobile phone users, it is not difficult to achieve dual WeChat login. This article will introduce how to achieve dual WeChat login on Huawei mobile phones. First of all, the EMUI system that comes with Huawei mobile phones provides a very convenient function - dual application opening. Through the application dual opening function, users can simultaneously

If the SQL Server installation fails, you can clean it up by following these steps: Uninstall SQL Server Delete registry keys Delete files and folders Restart the computer
