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- File extension . DB - What kind of database is it exactly?
If you're on a Unix-like platform (Mac OS X, Linux, etc), you could try running file myfile db to see if that can figure out what type of file it is The file utility will inspect the beginning of the file, looking for any clues like magic numbers, headers, and so on to determine the type of the file
- 衰减的单位dB是什么意思？ - 知乎
一、dB的基本概念 在生活中，提到dB（分贝）这个单位，通常是和声音联系到一起，好像它仅仅是一个声学单位。但实际上，dB这个单位应用很广泛，在声学、电子学、光学、影片与数位成像领域都有它的身影。
- How do I grant read access for a user to a database in SQL Server?
Once you have that user in your database, you can give it any rights you want, e g you could assign it the db_datareader database role to read all tables USE (your database); ALTER ROLE db_datareader ADD MEMBER (your user name);
- How do I unlock an SQLite database? - Stack Overflow
In that case, a workaround is to replace the database file with a fresh copy that isn't locked on the NFS server (mv database db original db; cp original db database db) Note that the sqlite FAQ recommends caution regarding concurrent access to databases on NFS volumes, because of buggy implementations of NFS file locking
- How do I see active SQL Server connections? - Stack Overflow
I threw this together so that you could do some querying on the results Declare @dbName varchar(150) set @dbName = '[YOURDATABASENAME]' --Total machine connections --SELECT COUNT(dbid) as TotalConnections FROM sys sysprocesses WHERE dbid > 0 --Available connections DECLARE @SPWHO1 TABLE (DBName VARCHAR(1000) NULL, NoOfAvailableConnections VARCHAR(1000) NULL, LoginName VARCHAR(1000) NULL
- *. db是什么文件，如何打开？ - 知乎
后缀是 db的文件是数据库文件，db是datebase的缩写，datebase的意思就是数据库。 数据库类型包括： 关系数据库、非关系型数据库（NoSQL） 关系型的有：Oracle，MySQL，SQLServer等 非关系型有：Redis，mongoDB 有专门数据库管理和设计工具可以打开，比如说：Navicat就可以
- How SID is different from Service name in Oracle tnsnames. ora
In short: SID = the unique name of your DB, ServiceName = the alias used when connecting Not strictly true SID = unique name of the INSTANCE (eg the oracle process running on the machine)
- Listing information about all database files in SQL Server
you can use sys master_files for get location of db and sys database to get db name SELECT db name AS DBName, type_desc AS FileType, Physical_Name AS Location FROM sys master_files mf INNER JOIN sys databases db ON db database_id = mf database_id
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