When to create a custom collating sequence file

On most platforms, Open Client/Server products include the following standard collating sequence files:

**Table 6-2: Commonly-supplied collating sequences**
File name	Description
binary.srt	Ordering corresponds to the internal binary value for each character. binary.srt contains the entry “binary = true”. No localization file is necessary for this sort order.
dictionary.srt	Dictionary order, case sensitive. Primary lexicographic ordering with uppercase letters before their lowercase counterparts. Secondary ordering for accented characters. The file name varies according to language. For example, the Spanish version is called espdict.srt.
noaccents.srt	Dictionary order, accent insensitive. Intermingles words that begin with an unaccented letter and words that begin with the letter’s accented counterparts. The file name varies according to language. For example, the Spanish version is called espnoac.srt.
nocase.srt	Dictionary order, not case sensitive. Intermingles words that begin with an uppercase letter with words that begin with the lowercase counterpart. The file name varies according to language. For example, the Spanish version is called espnocs.srt.
nocasepref.srt	Dictionary order, not case sensitive with preference for uppercase only when there is a lowercase equivalent.

The Sybase Character Sets CD contains other sort orders for specific regions, such as Turkey, Russia, and Greece.

If a language you are using has further collating sequence requirements, you can create a custom collating sequence file according to the guidelines in “About collating sequence files”.