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Tags: Database sql dba MySQLLike most relational databases, log files are an important part of the MySQL database. MySQL has several different log files, usually including error log files, binary logs, generic logs, slow query logs, and so on. These logs can help us locate events inside mysqld, database performance failures, record data change histories, user recovery databases, and more. Binary logs, also

Interchange Between Binary Gray Codes and natural binary codesYouzhiyu, Institute of optoelectronic technology, Chinese Emy of SciencesDownload Sample projectIn the precise positioning control system, it is very important to accurately measure and control the object location to improve the control accuracy. At present, there are two ways to detect the position: one is to use a location sensor, the displacem

Binary sorting tree and the transformation of the balanced binary tree start to see the video alone when the feeling is clear, but see the problem is at a loss, if one-way rotation can also, encounter LR type and RL type is difficult, so be sure to write a blog to understand it. This blog will first introduce the binary sorting tree, and then introduce what is a

Binary, octal, decimal, hexadecimal conversion, binary hexadecimal1. Preface The most boring thing during each holiday is that you don't want to get up or eat. Founder just doesn't want to move, lie in bed, watch the mobile phone, and brush QQ space bored. Although few people are playing QQ space now, however, this kind of habit has never changed until now, and the QQ on the computer is suddenly flashing. I

MySQL binary log (binary log) Summary, mysqlbinary Source: http://www.cnblogs.com/wy123/p/7182356.html(The Source retained is not the right of original works. My work is far from reaching this level, just to link to the original article, because some possible errors will be corrected or supplemented later, without him) Today, I accidentally discovered a MySQL "first season: Challenge xuanjicang slow SQL P

Binary XOR or operation of the binary number of the 1 number of parity, that is to say there are three cases, 1. A binary number with an odd number of 1 and a binary number with an odd number of 1. 2. A binary number with an odd number of 1 and a

hexadecimal to decimalUsing the Int () function, the first argument is the string ' 0Xff ', the second argument is the description, and the string is a number of binary numbers. The result of the conversion is a decimal number.>>> int (' 0xf ', 16)15Binary to Decimal>>> int (' 10100111110 ', 2)1342Octal to Decimal>>> Int (' 17 ', 8)15You can actually see that the int () function is used regardless of the number of decimal numbers that are converted in

Previously wrote 16 binary and 64 binary conversion function, today to do download page short connection, suddenly thought can be converted to 64 binary ID, so that the address looks shorter, below is the code, share to everyone. Performance test, 1000-time calculation of the reciprocal calculation, 4-bit 64 binary n

Definition An ordered tree with a maximum of two Subtrees is calledBinary Tree. Binary Tree is a specialTree. Recursive definition: a binary tree is a set of n (n> = 0) finite nodes. N = 0 is called an empty binary tree; n> 0 is a binary tree composed of a root node and two trees that are mutually exclusive. The 1st su

This problem algorithm describes: hexadecimal conversion to binary is the expansion of each bit: such as 1234H expansion: 0001 0010 0011 0100 1.bx:0000 0000 0000 0000 2. Enter a legal number to convert to 0000b~1001b or to: 1010b~1111b 3. Merge with BX 4.BX shift left four bit ; receives a four-bit 16 binary number from the keyboard and displays its equivalent binary