请问高手们一个关于SqlServer数据库文件大小的问题..
我们在某DB右键--属性-- 文件 会看到下图 这里会列出MDF和LDF 文件 的 大小 .. 划红线这个地方原本是8000M的,也就是8G,然后我在这里手动输入个50,它变为57M了,我去 文件 夹里看这个物理的LDF 文件 大小 ,也从8G左右变了57M了, 请问 那么其它7G多的数据是不是
我们在某DB右键-->属性-->文件会看到下图

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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.

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

The syntax differences between MySQL and SQL Server are mainly reflected in database objects, data types, SQL statements and other aspects. Database object differences include the storage engine and how filegroups are specified, and the creation of indexes and constraints. Data type differences involve differences in numeric types, character types, and date and time types. SQL statement differences are reflected in result set limitations, data insertion, update and delete operations, etc. Other differences include how identity columns, views, and stored procedures are created. Understanding these differences is important to avoid errors when using different database systems.

To delete a SQL Server database, please perform the following steps in sequence: 1. Log in to SQL Server Management Studio; 2. Expand the database node; 3. Right-click the database to be deleted; 4. Select "Delete"; 5. Confirm the deletion. Note: Deleting the database is irreversible, please make sure you have backed up important data and disconnected other objects.

The problem that SQL Server cannot be reinstalled due to incomplete deletion can be solved by following the following steps: manually delete files and registry entries; use SQL Server installation and uninstall tools; use third-party uninstall tools; check Windows Event Viewer; restart the computer; reinstall SQL Server.

The location where the Navicat database configuration files are stored varies by operating system: Windows: The user-specific path is %APPDATA%\PremiumSoft\Navicat\macOS: The user-specific path is ~/Library/Application Support/Navicat\Linux: The user-specific path is ~/ .config/navicat\The configuration file name contains the connection type, such as navicat_mysql.ini. These configuration files store database connection information, query history, and SSH settings.

Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.

In SQL Server, concurrent updates can be allowed by using the WITH (ROWLOCK) query hint. This query prompts to obtain a row-level lock for each row returned, allowing other connections to simultaneously update different rows that do not conflict with the current query.
