change key

Millet 51 Key Change machine Preparation tools: Millet 5 Mobile phone one, old millet mobile phone. This article to Millet 4, Millet 51 key Machine For example, that is, small set before the use of Millet 4 mobile phones, bought a new millet 5,

Reprinted from: http://blog.csdn.net/sunrise918/article/details/5575054These days on the logical primary key, business primary key and composite primary key have some thinking, also searched the related discussion on the net, related discussion can

How to Use pt-online-schema-change to change the primary key of a MySQL table, ptonlinechangeschema When the service runs for a period of time and finds that the original primary key settings are not reasonable, you want to change the primary key.

Reproduced: http://blog.csdn.net/sunrise918/article/details/5575054 In the past few days, I have thought about logical primary keys, business primary keys, and composite primary keys. I also searched for some discussions on the Internet. For more

Virtual-key codes -------------------------------------------------------------------------------- The following table shows the symbolic constant names, hexadecimal values, and mouse or keyboard equivalents for the virtual-key codes used by the

Recently in the collation of things about MySQL, to write down some things to record, in order to query and browse later, the following are some of the operational skills.Add a table fieldALTER TABLE table1 add transactor varchar (ten) not

Constants Vk_lbutton (0x01) Left mouse button Vk_rbutton (0x02) Right mouse button vk_cancel (0x03)

mac third-party input method How to change the CAPS LOCK key to the Input method switch key According to my personal habits, I finally decided to change the CAPS LOCK key to the Input method switch key, because as a Chinese input method

Des:Digital Encryption Standard. Obsolete Standard.Single key algorithm is the sender of the information using key A for data encryption, the receiver of the information uses the same key a for data decryption. The single key algorithm is a

Use of Foreign database keys     Foreign key: Data consistency and integrity are maintained to control data stored in the foreign key table. Associate two tables. The foreign key can only reference the values of columns in the External table! For