The number indicates the number of octets an octet is 8 bits in the coded character set. In order to be compatible with older systems that didn't support Unicode, Encoding Forms were defined by the Unicode Consortium to be a representation of the character in bits. The number indicates the encoding form that is to be used: UTF-8 indicates an 8-bit encoding form, while UTF indicates a bit encoding form. BOM stands for Byte Order Mark, and is the encoding signature for the file - a particular sequence of bytes at the beginning of the file that indicates the encoding and the byte order.
UTF represents each bit code point value as a single bit code unit. In Unicode, code points are bit integers. UTF is optimized for systems where bit values are easier or faster to process and space is not an issue.
It is popular where memory space is of little concern, but fixed width, single code unit access to characters is desired. The vast majority of characters are represented with single bit code units, making it a good general-use compromise between UTF and UTF But the order of the bytes in memory depends on the processor of the computer.
In other words, some computers write "10, 77", and others write "77, 10". UTF-8 is the default encoding form for a wide variety of Internet standards and represents each bit code point value as a sequence of one to four 8-bit code units. UTF-8 is a compact, efficient Unicode encoding scheme.
If a database is created in the partial Unicode mode General. The UTF-8 and UTF encodings are essentially ways of turning the encoding into the actual bits that are used in implementation; UTF-8 and UTF encodings share the same character set, but the data size of each character differs. UTF assumes bit characters and allows for a certain range of characters to be used as an extension mechanism in order to access an additional million characters using bit character pairs.
UTF-8 is a way of transforming all Unicode characters into a variable length encoding of bytes. These characteristics include international language fonts, display and print features, and data input for unfamiliar scripts such as Chinese, and Japanese. Implement Unicode only if there is a real business need to combine unrelated scripts. If you confirm that data in a data source for example, Oracle is coded in Unicode format, with text in different languages for example, Japanese and English , you have two configuration options:.
Data source and client code page settings are typically set during installation or by editing settings in configuration files.
For details, refer to the documentation of the specific vendor. UTF-8 is a variable-length encoding scheme. However, more complex alphanumeric data types from Oracle and other vendors may refer to characters when their client side encoding is set to UTF In Unicode, one byte is not necessarily equal to one character, so be sure to allow enough space for alphanumerics.
In the following scenario, Unicode is the only solution for combining data in two unrelated scripts, such as Japanese and Chinese. Without Unicode implementation, Japanese and Chinese, as unrelated scripts, are accessed using different code pages regardless of operating system.
In this scenario, the data sources may or may not be on two different operating systems. Unicode provides a unique number for every character, no matter what the platform, no matter what the program, no matter what the language. Fundamentally, computers just deal with numbers.
They store letters and other characters by assigning a number for each one. Before Unicode was invented, there were hundreds of different systems, called character encodings, for assigning these numbers. These early character encodings were limited and could not contain enough characters to cover all the world's languages. Even for a single language like English no single encoding was adequate for all the letters, punctuation, and technical symbols in common use.
Early character encodings also conflicted with one another. That is, two encodings could use the same number for two different characters, or use different numbers for the same character. Any given computer especially servers would need to support many different encodings.
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