System for maintenance of database integrity

Details System for maintenance of database integrity System for maintenance of database integrity

G - Physics

06

F

G06F 17/40 (2006.01) G06F 11/34 (2006.01) G06F 17/30 (2006.01)

Patent

CA 2211013

A method and system for maintaining data integrity utilizes a log file organized into slots with the number slots never exceeding the largest number of concurrent updating the database comprising: creating a log file (50) for storing a log record corresponding to transaction in-progress; request locking of all database records involved in transaction (53); identifying a slot available after all database records involved in the slots have been locked (58); reusing the slots to store log records in order that they become available (90).

Méthode et système pour maintenir l'intégrité de données au moyen d'un fichier journal organisé en positions dont le nombre ne dépasse jamais le nombre le plus élevé de mises à jour concurrentes de la base de données. Comprend les étapes suivantes : créer un fichier journal (50) pour stocker un journal correspondant aux transactions en cours; demander le verrouillage de tous les enregistrements de la base de données associé à une transaction (53); identifier une position disponible après le verrouillage (58) de tous les enregistrements de la base de données associés aux positions; réutiliser les positions pour stocker les journaux afin qu'ils deviennent accessibles (90).

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