2fa key

Beckham _ redis key value learning, Beckham _ rediskey key value Redis General (key) Type 1. What is a general key type? 2. View General commands Iii. General examples I. general type It is literally translated from the word generic, so it is called the general type or attribute type. Redis is a

Label:Database Primary Key and Foreign key --create referenced TableCREATE TABLE Department (DeptID int PRIMARY key,--define PRIMARY keyName varchar (not NULL),Address varchar (+) NULL)--create referencing TableCREATE TABLE Employee (EmpID int PRIMARY key,--define PRIMARY keyName varchar (not NULL),Salary int NULL,--de

This involves mainly the concepts in cryptography. In general, we also have cryptography-like things in our computer, such as kerbovers, so we can leave them here for more information. I have previously written an article titled "secure login authentication Design for websites", which may not be clear enough. One reader left a message to question: "The public key is public as its name implies, who will have your public

The relational database relies on the primary key, which is the cornerstone of the database physical pattern. There are only two uses of the primary key at the physical level: Uniquely identifies a row. As an object that can be effectively referenced by a foreign key. An index is a special kind of file (an index on a InnoDB data table is an inte

Previously I wrote an article" Design of secure login authentication for websites ", It may be that the story is not clear enough. One reader left a message and questioned it,"As the name suggests, the Public Key is public. As long as you want it, everyone will have your public key. How can it be secure?It should be encrypted with the public key of the websit

Is it really difficult to choose between public and private keys when using public key cryptography for encryption and signature?This article is the second version, because the first version is unfortunately ...... Let's talk less and get down to the truth. It is often said that when using public key cryptography for encryption and signature, you must know whether to use the public

One, bidirectional primary Key AssociationA two-way primary key association is actually a special case of one-way one-to-one primary key associations, except for the Here also use person and Idcard to discuss, one corresponds to a unique identity card, and an identity card is the only map of a person, so this produces a two-way relationship, person's primary

Label:Foreign keys have the mechanism of maintaining data integrity and consistency, and have a good check effect on business processing. 1. The table engine must be INNODB,MYISAM not supported 2, foreign keys must be indexed (can be normal, primary key, unique, not established in advance will automatically create a normal index), you want to use the foreign key and the reference of the external

Two common cryptographic algorithms in cryptography are symmetric cryptography (single-key cryptography) and asymmetric cryptography (public key cryptography ). The so-called symmetric key algorithm means that if the encryption key of an encryption algorithm is the same as that of the decryption

"Win8 is for touch screen", it seems that this is our first impression of the WIN8 system. Win8 canceled the Start menu and added a new "start" screen that lets us switch back and forth between the "desktop" and "Start" two screens, and it may not be easy for the novice to quickly find the settings and features that were once familiar. On the traditional computer, we still rely more on the keyboard operation, want to work more efficient, you may wish to master some Win8 system shortcut keys.