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| author | Bruce Momjian <bruce@momjian.us> | 2000-06-19 13:54:50 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2000-06-19 13:54:50 +0000 |
| commit | 6de7d4fe91b1f037eb9ad612a22e972037426100 (patch) | |
| tree | 1661370f02a7ce6aa212a35b15d35f344faccad1 /contrib/isbn_issn/README | |
| parent | b2c56574e1a83d4f71f72f9243423eeddbdbbe20 (diff) | |
| download | postgresql-6de7d4fe91b1f037eb9ad612a22e972037426100.tar.gz | |
Update to /contrib from Karel.
Diffstat (limited to 'contrib/isbn_issn/README')
| -rw-r--r-- | contrib/isbn_issn/README | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/contrib/isbn_issn/README b/contrib/isbn_issn/README index 6b734ce905..e69de29bb2 100644 --- a/contrib/isbn_issn/README +++ b/contrib/isbn_issn/README @@ -1,22 +0,0 @@ - -ISBN (books) and ISSN (serials) -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -This directory contains definitions for a couple of PostgreSQL -external types, for a couple of international-standard namespaces: -ISBN (books) and ISSN (serials). Rather than just using a char() -member of the appropriate length, I wanted my database to include -the validity-checking that both these numbering systems were designed -to encompass. A little bit of research revealed the formulae -for computing the check digits, and I also included some validity -constraints on the number of hyphens. - -The internal representation of these types is intended to be -compatible with `char16', in the (perhaps vain) hope that -this will make it possible to create indices of these types -using char16_ops. - -These are based on Tom Ivar Helbekkmo's IP address type definition, -from which I have copied the entire form of the implementation. - -Garrett A. Wollman, August 1998 |