First, prefaceThe author of the Oracle database understanding, a long time to stay in the "illusion" of the state, you say do not understand it, and will use, a take it up, on some basic concepts and can not say a way to ~ if you want to go farther
Information A
1, stop the database server, the database MDF files and LDF files copy backup a copy
2, start the database server, delete the suspect database
3, only with the backup of the database MDF file attached to the database,
First, the database nameWhat is a database name? The database name is the identity of a database, just like a person's ID number. He uses parameter db_name to indicate that if a machine is loaded with multiple databases, then each database has a
In MySQL, databases and tables correspond to directories and files under those directories. Therefore, the sensitivity of the operating system determines the case sensitivity of the database and table names. This means that the database and table
In MySQL, databases and tables correspond to directories and files under those directories. Therefore, the sensitivity of the operating system determines the case sensitivity of the database and table names.
In MySQL, databases and tables correspond
And 1 = 2 union select 1, 2, 3, CONCAT_WS (CHAR (, 32), user (), database (), version /*2. Check the databaseAnd 1 = 2 union select 1, SCHEMA_NAME, 3, 4, 5, 6, 7, 8 from information_schema.SCHEMATA limit/* limit increases progressively from 0. When 3
In making a plugin, you need to use the name of the database.But I don't know how to get it.
There is a GetConfig method found in the DB class, and the attributes inside are the properties I'm looking for, but they're all private.
To find a
1. Get allDatabase Name: (1) Select name from Master. DBO. sysdatabases order by name2. Get all table names:(1) Select name from sysobjects where xtype = 'U' order by nameXtype = 'U': indicates all user tables;Xtype = 's': indicates all system
If it's myisam. Just change the name of the library name folder under the data directory OKIf it's innodb. It is not possible to modify the name of the library. Rename database or ALTER DATABASE is not a good place to be on the Internet blind 咧咧.
This means that database and table names are case insensitive in Windows and are case-sensitive in most types of Unix systems. A special case is Mac OS X, when the default hfs+ file system is used. However, Mac OS X also supports UFS volumes, which
MySQL introduced a rename database operation in 5.1, but did not support this command after MySQL5.1.23. Can be said to be an experimental function, not in the production support (mysql-5.1 release in mysql-5.1.30), then in production we sometimes
Database query name:
SelectName from Master. DBO. sysdatabasesWhere status<> 512
Query table (tables) Name:
SelectName from DBO. sysobjectsWhere objectproperty (ID, n'isusertable ')= 1 andName <> 'dtproperties'
Query the name of a data table with
Using system. data. sqlclient; /// // obtain the names of all database servers in the LAN. /// // server name array public list getsqlservernames () { datatable datasources = sqlclientfactory. instance. createperformanceenumerator ().
Use master
Go
-- Create a database
Create Database dB on (name = 'db', filename = 'd: \ dB. MDF ')
Go
-- Rename a database
Exec sp_renamedb dB, DBT
Go
-- Detach a database from the server
Exec sp_detach_db DBT
Go
-- Rename a database file
Mysql database names and table names are case sensitive in different systems. in MySQL, databases and tables correspond to directories and files in those directories. Therefore, the sensitivity of the operating system determines the case sensitivity
Database and table names are case-insensitive in Windows, while they are case-sensitive in most types of UnixLinux systems. So how can we deal with this problem? after some queries, we found that the lower_case_table_names parameter can be case
"One" understanding of the Oracle_sid--------------------------------------------------------------------------------The SID in Oracle acts like a "switch variable"---directs Oracle to start the instance correctly by reading the appropriate
In MySQL, databases and tables correspond to directories and files in those directories. Thus, the sensitivity of the operating system determines the case sensitivity of database and table naming. This means that database and table names are case
1. RENAME DATABASE db_name to New_db_nameThis one.. This syntax is added to the MySQL 5.1.7, 5.1.23 and removed.It is said that it is possible to lose data. It's better not to use it.See: http://dev.mysql.com/doc/refman/5.1/en/rename-database.html
2
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