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Collation internals
Comment lines
The title line
340
Collation files may include the following elements:
•
Comment lines, which are ignored by the database.
•
A title line.
•
A collation sequence section.
•
An Encodings section.
•
A Properties section.
In the collation file, spaces are generally ignored. Comment lines start with
either the percent sign (
%)
The first non-comment line must be of the form:
Collation label ( name )
In this statement:
Item
Description
A required keyword.
Collation
The collation label, which appears in the system tables as
label
SYS.SYSCOLLATION.collation_label and
SYS.SYSINFO.default_collation. The label must contain no
more than 10 characters, and must not be the same as one of the
built-in collations. (In particular, do not leave the collation label
unchanged.)
name
A descriptive term, used for documentation purposes. The name
should contain no more than 128 characters.
For example, the Shift-JIS collation file contains the following collation line,
with label SJIS and name (Japanese Shift-JIS Encoding):
Collation SJIS (Japanese Shift-JIS Encoding)
or two dashes (
.
--)
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