when crawling HTML pages, there are always different encodings, and we don't usually do one by one of these encodings, but instead collectively convert them into the same code and easily mount the database. At this point, Iconv becomes a very
During the installation and JDBC development of DB2, you may encounter some common problems and make a record to be noted:
1. License
Whether the DB2 version is genuine or not depends on the license, but there is no prompt during the installation
How to (in a program) add and use Unicode for foreign language support
Level: elementaryThomas W. Burger (twburger@bigfoot.com) Thomas Wolfgang burger Consulting's bossAugust 01, 2001
As a computer's multi-character
About the Unicode character set(2011-10-20 20:54:03) The initial Unicode encoding is a fixed-length, 16-bit, or 22-byte representation of a character, which can represent a total of 65,536 characters. Obviously, it is not enough to represent all the
1. Common sense of Character Set and encoding
Character Set:
Some characters are collected to one place as needed and assigned with names, so a character set is available.
For example:
ASCII:
ASCII character set: Contains 128 uppercase and lowercase
Concept description
ORACLE databases are divided into national character set and database character set. Both of them must be set during database creation. The National Character Set is mainly used for field data of the NCHAR, NVARCHAR, and NCLOB
Character encoding, in programming, is a let learners more depressed things, such as a str, if all is English, say more. But that is not the case, Chinese is what we have to use. So, even beginners, understand and can solve the problem of character
To represent with a number
Not afraid to mention, in fact, the computer only understand the numbers. But the following may not be so obvious--because computers only understand numbers, they need to map numeric values to corresponding characters in
Concept Description
The Oracle database is divided into the national character set (character set) and the database character set (db character set). Both are set when you create the database. The national character set is mainly used for nchar,
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