Selective users update their holdings on OCLC through a process
called batchloading. Each year these libraries export their online
catalog database. All of the TBLC library databases are merged
together into one file and sent to OCLC as a group file. TBLC
facilitates this process and The MARC of Quality (TMQ) performs the
processing and analysis of the files. Both adds and deletes are sent
to OCLC so that holdings can be updated. The holdings information
on WorldCat will then be updated so that it actually reflects what
libraries currently hold. This increases the effectiveness of the ILL
process.

Currently 37 libraries are batchloading their holdings to WorldCat
with the assistance of TBLC as a group agent.

No-match
Approximately 95 percent of the records batchloaded to WorldCat
will match a record already present in the WorldCat database. Five
percent do not match, so those library holdings are not represented
in WorldCat after the initial database matching process. Some of
these library records did not match because they represented
unique items, and some did not match because of variations in
cataloging practice.

In order to include as many of the libraries' holdings as possible in
WorldCat, TBLC continues the batchloading process and attempts to
resolve non-matching records. Non-matching records are manually
searched in WorldCat, and holdings are set when a match is found.
When no match is found, libraries are asked to send items to TBLC so
that further information can be obtained from the item, or an original
record can be created if necessary.

Page Content Updated 04/15/2008

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