Management method, management program and management apparatus of database
AssigneeHitachi, Ltd.
InventorsNaoki NAMIKAWA, Norihiro Hara, Masami Hikawa
Life of this patent
Estimating the term…
Abstract
A database management system includes a backup processing portion and a DB access processing portion. The backup processing portion operates to write data at a given time of a database stored in a storage unit out of the database after the given time as backup data. When an update request for data not written out as the backup data occurs in a data access request after the given time, the DB access processing portion writes the data at the given time out of the database as the backup data and updates the data written out of the database according to the update request. The backup processing portion and the DB access processing portion execute their processes in parallel.
Claims9
A database management method to be executed by a database management apparatus for managing data saved in a database, the database management apparatus having a data access processing portion and a backup processing portion, comprising the steps of:
- causing the backup processing portion to write as backup data the data saved in the database at a given time from the database after the given time;
- and
- causing the data access processing portion to execute a data access to the database in response to a data access request for the database, write the data at the given time out of the database as the backup data when an update request for the data that is not written out as the backup data takes place in the data access request after the given time and then to update the data saved in the database according to the update request;
- and
- wherein the database management apparatus executes the process of the backup processing portion and the process of the data access processing portion in parallel.
A database management apparatus for managing data saved in a database, comprising:
- a backup processing portion for writing data at a given time of the database stored in a storage unit out of the database after the given time as backup data;
- and
- a data access processing portion for executing a data access to the database in response to a data access request for the database, when an update request for data not written out as the backup data occurs in the data access request after the given time, the data access processing portion writing out the data at the given time as the backup data from the database and updating the data of the database according to the update request;
- and
- wherein the backup processing portion and the data access processing portion execute their processes in parallel.
Dependencies are inferred from the claim text.