Unicode, ucs-2, ucs-4, UTF-16, utf-32, UTF-8
Unicode details
Copyright Notice: It can be reproduced at will, but the original author charlee and original link http://tech.idv2.com/2008/02/21/unicode-intro/must be indicated in a timely manner.
Maybe everyone has heard of Unicode, UCS-2, UTF-8 and other words, but what they specifically mean, what is the principle
characters in the UTF-16 are either 2 bytes or 4 bytes. UTF-16 is mainly used in versions above Windows2000.The advantages of UTF-16 relative UTF-8 are consistent with UCS-2.Oracle provides support for Unicode from 7.0 onwards. The Oracle version of the Unicode character set branch is mainly:Al32utf8A UTF-8 coded character set that supports the latest unicode4.0
, from the location code to the inner code, you need to add A0 on the high and low byte respectively.In DBCS, GB internal code storage format is always big endian, that is, high in front.The highest bit of the two bytes of the GB2312 is 1. But the code bit that meets this condition is only 128*128=16384. So the low-byte highest bits of GBK and GB18030 are probably not 1. However, this does not affect the parsing of DBCS character streams: When reading a DBCS character stream, you can encode the
ASCII and related standards
The earth people all know ASCII is the abbreviation of the American Standard Information Interchange code, also know that the ASCII stipulation uses 7 digits binary numeral to represent English character, the ASCII is designated as international standard after the code name is ISO-646. Since the ASCII code uses only 7 bits, that is, a byte can represent 256 digits, it uses only the 0~127 128 code bits, the remaining 128 code bits can be used to expand, to represent s
This video tutorial is the 15 new DC Datacenter Data Center full set of video tutorials, including (storage/ucs/nexus/vsphere) Four parts,as long as you master this four tutorials can build the entire data center structure, such as: Core network-storage-Blade Server-Virtualization (Cloud architecture)15 new DC Datacenter Data Center full set of video tutorials (part 1th)-Storage:15 current Ming party. Storage network. 1. Storage Network and product in
ASCII, gb2312, and GBK to gb18030 are both backward compatible. Among them, gb2312 and GBK to gb18030 both belong to the dual-byte character set (DBCS character set)Unicode is ANSI compatible. For example, the Unicode encoding of the Chinese character is 6c49, And the GB encoding is Baba.The Unicode name is "Universal multiple-octet coded chasracter set", for shortUCOS only specifies how to encode and does not specify how to transmit and save the encoding. For example, the "Han" character's
Recently, a number of Cisco ucs c Series servers have been added. After two weeks of deployment and installation, the server can finally be tested. This document briefly introduces the network configuration of the Operating System (centos 6) in the Cisco UCS server. It can be simply considered that this article describes the network configuration of a physical server connecting the NIC to the trunk mode por
This article by larrylgq prepared, reproduced please note the Source: http://blog.csdn.net/larrylgq/article/details/7450256
Author: Lu guiqiang
Email: larry.lv.word@gmail.com
Upper: http://blog.csdn.net/larrylgq/article/details/7444999
The general character set of UCS (Universal Character Set) is independent of the character set independent character set.
It means that the language converts the text into an internal character set before process
I recently learned encoding.
The following addresses can be used to learn related knowledge.
Http://dev.csdn.net/develop/article/69/69883.shtm
Http://dev.csdn.net/develop/article/72/72888.shtm
This section describes the UTF-8 encoding.
When the content to be expressed is 7 bits, use one byte: 0 ********. The first 0 is the flag, the remaining space can represent the content of ASCII 0-127.When the content to be represented is between 8 and 11 bits, two bytes are used: 110*10*10 of the First and
After the customer has deployed UCS 6248, open the browser access, found that the system correctly pops up the user name and Password dialog box, but after entering the user name and password, the system returned the following prompt:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/58/2D/wKiom1SrTQbihAEDAAJBBlAG_50229.jpg "style=" float: none; "title=" snap61.jpg "alt=" Wkiom1srtqbihaedaajbblag_50229.jpg "/>650) this.width=650; "src=" http:/
Cisco UCS 62XX firmware upgrade for personal useBecause again to some blades, the new blade firmware different, the version is very new, some can be downgraded to the current use of 2.2.1b, some do not know why not down ...More fixed bug, compatible with Vmware6, so upgrade ...Main preparatory work:1, confirm that the machine is running well, there are no major errors;2, check your profile file, confirm their network card and HBA card how to go (I am
Cisco UCS C-Series Server Configuration GuideAfter rebooting, press Ctrl+h to enter the RAID configuration interface in Figure 6, as shown in the 5 interface.650) this.width=650; "title=" clip_image002 "style=" border-top:0px;border-right:0px;background-image:none; border-bottom:0px;padding-top:0px;padding-left:0px;border-left:0px;padding-right:0px, "border=" 0 "alt=" clip_ image002 "src=" http://s3.51cto.com/wyfs02/M00/6F/1F/wKiom1WSQqTQJGXjAAEjpUIn_
The user's UCS Manager, found chassis 2 6th slot fan Alarm, led does not light, the slot fan and other normal slot fan interchange, the fan is working properly, but the original good fan inserted in the 6th slot, still alarm, LED does not light. The initial judgment should be the problem with the knife case. A case was opened to Cisco and the Cisco TAC Engineer was connected remotely to 6248, and the command to view the fan did work abnormally, with t
Oracle
[Oracle] History of the Oracle ――oracle company legend
Author: fenng
Date: Sep 09 2004
The origins of Oracle Company
It is hard to imagine the Oracle Company's saga starting with IBM.
1970 June, IBM researcher Edgar Caut
Oracle learning path (5) ----- General oracle data type operations, oracle ----- oracle1. Some common Operators
Operator
Meaning
=
Equal
Not equal
Less
>
Greater
Less than or equal
> =
Greater than or equal
+
Plus sign
-
Minus sign
Tags: http io ar using SP for on file dataThe problem to the machine environment:Oracle 11gR2 64bitNavicat for Oracle 11.0.10According to the practices of some of the great gods on the internet and some of the personal speculations, the following are summarized:The problem occurs because the navicat is inconsistent with the number of bits of Oracle, the former 32bit, the latter 64bitSome of the online pract
Original: http://blog.csdn.net/robinson_0612/archive/2010/04/26/5529239.aspx
-- ===================================================== ===
-- Oracle instance and Oracle Database (Oracle Architecture)
-- ===================================================== ===
/*
For those who are new to Oracle databases, the two conce
Resume oracle.sh in/etc/profile.d/
The contents are as follows in Nls_lang setup encoding
1 oracle_home=/usr/lib/oracle/12.1/client642 c_include_path=/usr/include/ oracle/12.1/client643 ld_library_path= $ORACLE _home/lib4# RememberThis was the client Nls_lang not the server one5 nls_lang=6 Export Oracle_ho ME Ld_library_path Nls_lang
Then modify the/ETC/INIT.D
, starting at m and intercepting N characters consecutively.---need to note: The database subscript is starting from 1!!!---n is truncated to the end of the current string if the number that is not specified or specified exceeds the actual character length that can be intercepted. n is the length.---if M is negative, it is intercepted from the countdown position. The number at the end cannot be negative.SELECT SUBSTR (' thinking in from dual;--->inSELECT SUBSTR (' thinking in from dual;--->in---
Oracle Character Set and encodingMorven. Huang: C #, ORACLE, etc. oracle handbook Series 10: Character Set, encoding, and Oracle
Part 1 Character Set and coding knowledge
Character Set:
Some characters are collected to one place as needed and assigned with names, so a character set is available.
Encoding:
After the cur
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