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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1992
Subjects:	Automatic Indexing Bibliographic Utilities Data Processing Library Automation Machine Readable Cataloging Online Catalogs Services Subject Index Terms
Online Access:	https://eric.ed.gov/?id=ED351018
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_version_	1867181124347756544
collection	Education Resources Information Center
contents	Data Conversion and Indexing: How To Get the Most out of Your Machine-Readable Database. DataResearch Automation Guide Series, Number Two. Automatic Indexing Bibliographic Utilities Data Processing Library Automation Machine Readable Cataloging Online Catalogs Services Subject Index Terms In today's library environment, the library's most important asset is its machine-readable database. In order to maintain this investment, Data Research Associates provides several comprehensive data conversion services, including retrospective conversion and authority control. For bibliographic records not yet in MARC (machine readable cataloging) format, Data Research offers network cataloging and batch processing services. Network cataloging allows the library to connect to the complete LCMARC database and overlay records manually. If the records contain a numeric search key they can be extracted and run against the LCMARC database for matching. Authority records allow the library to improve the accuracy and consistency of headings used in the bibliographic records. Authority records, most of which have been created and distributed by the Library of Congress, are available for names, uniform titles, series, and subjects. Data Research will take the library's bibliographic records and authorize the database, which will eliminate the variations found within headings that are identical from a content perspective but considered different by the computer. Once the library's database has been authority processed, Data Research can provide online authority verification to keep its file current. To assist with constructing an index, Data Research can also provide a Standard Indexing Table for Bibliographic and Authority Records. (KRN)
format	Recurso educativo Open Access
id	eric_ED351018
institution	ERIC Institute of Education Sciences
language	en
publishDate	1992
record_format	eric
spellingShingle	Data Conversion and Indexing: How To Get the Most out of Your Machine-Readable Database. DataResearch Automation Guide Series, Number Two. Automatic Indexing Bibliographic Utilities Data Processing Library Automation Machine Readable Cataloging Online Catalogs Services Subject Index Terms Data Conversion and Indexing: How To Get the Most out of Your Machine-Readable Database. DataResearch Automation Guide Series, Number Two. Automatic Indexing Bibliographic Utilities Data Processing Library Automation Machine Readable Cataloging Online Catalogs Services Subject Index Terms In today's library environment, the library's most important asset is its machine-readable database. In order to maintain this investment, Data Research Associates provides several comprehensive data conversion services, including retrospective conversion and authority control. For bibliographic records not yet in MARC (machine readable cataloging) format, Data Research offers network cataloging and batch processing services. Network cataloging allows the library to connect to the complete LCMARC database and overlay records manually. If the records contain a numeric search key they can be extracted and run against the LCMARC database for matching. Authority records allow the library to improve the accuracy and consistency of headings used in the bibliographic records. Authority records, most of which have been created and distributed by the Library of Congress, are available for names, uniform titles, series, and subjects. Data Research will take the library's bibliographic records and authorize the database, which will eliminate the variations found within headings that are identical from a content perspective but considered different by the computer. Once the library's database has been authority processed, Data Research can provide online authority verification to keep its file current. To assist with constructing an index, Data Research can also provide a Standard Indexing Table for Bibliographic and Authority Records. (KRN)
title	Data Conversion and Indexing: How To Get the Most out of Your Machine-Readable Database. DataResearch Automation Guide Series, Number Two.
topic	Automatic Indexing Bibliographic Utilities Data Processing Library Automation Machine Readable Cataloging Online Catalogs Services Subject Index Terms
url	https://eric.ed.gov/?id=ED351018

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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Registered Handlers

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