How to hide the named database in the south, and what does named database instance refer to?

Only one field can be added automatically, and it must be set as the primary key.

That is, only one of your table fields can be defined as auto increment, and this field must be set to primary key

Post the SQL statement you created the table or the table structure you want.

At present, the database on the Internet cannot be in Chinese, including databases, tables, and fields

1. You cannot use Chinese.

2. There can be no illegal characters, such as: %, etc.

3. Start with letters and numbers, and start with a combination of letters, mathematics, and .

Red Hat's Enterprise Edition is now out of the series.

3 is suitable for Red Hat Enterprise systems.

4 is suitable for Red Hat Enterprise systems.

And so on! It is recommended to write the next source code by yourself.,Compile it yourself.。 This is suitable for all versions of the operating system.

After all, many parameters of the RPM version cannot be adjusted according to your own needs, and you can learn a lot of new things, if you have any questions, you can refer to it.

If it is a vfp, just change it directly under the corresponding folder, and if it is a sqlserver, use the enterprise manager to select and use the context menu to rename it.

Right-click on the table name and select Rename is the most straightforward.

In business management, the table is right.

or sp rename'Old tables','New table','object'

The so-called "instance" is a SQL Server database engine, and a database engine can be used to create multiple databases, such as my computer, and the name of the SQL Server instance is sqlexpress

Underneath this example, there are several databases.

Why naming it. It's very likely that I have SQL Server 2005 installed on my machine, and SQL Server 2008 installed. 2 servers, need different names to distinguish them.

For network requests.

If I'm going to access a SQL database.

You must provide machine name + instance name to access e.g. c: documents and settings wzq>sqlcmd -s"localhost\sqlexpress"

1> use stock

2> go

The database context has been changed to'stock'。

Yanfang, from Wei Yingwu's "Twelve Quasi-Ancient Poems": "Fangshu is self-inflicted, and spring birds seek each other".

Mi Gao, from Lu Bing's "Dolly": "De Mi Gao, the source of Confucius and Mencius, only to come out, and the clouds of the clouds".

Jun Bao, from Feng Yansi's "Magpie Treading Branches": "Don't wait for idle fights, and take joy from Jun Bao".

Fang Bohao, Fang Zhixing, Fang Ruisheng, Fang Huayan, Fang Boqi, Fang Xurun, Fang Yongfu, Fang Yuansong, Fang Xuyan, Fang Anyi, Fang Baicheng, Fang Hongwei, Fang Haoxu, Fang Yuanou, Fang Taode, Fang Wenhang, Fang Yirong, Fang Mingyun, Fang Boyun, Fang Zhihong, Fang Chengjiu, Fang Jinzhi, Fang Binhui, Fang Manshan, Fang Taosheng, Fang Taizhou, Fang Weihao, Fang Youheng, Fang Hanyuan, Fang Junyuan.

mysql should be the username you use to log in to the database.

dbname is the name of your database.

MySQL Pass is the password you use to access the database, do you see if you wrote it correctly?