Method and apparatus for data processing
AssigneeMaximum Availability Limited
InventorJames S. Tarbell
Life of this patent
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Abstract
The invention relates to data processing methods and systems including: a method of database replication in which information strings are assigned to serialization groups for processing; a method of memory management in which data is read from a storage space area while no data is written to it; a method of replicating a database in which a dynamic table is created to provided processing information for database members; and/or a method of replicating a database wherein tasks are allocated to program components without program components interacting.
Claims7
In a database replication computing system, a computer implemented method of replicating a database from a source computer system at a target computer system comprising, at the database replication computing system, the steps of:
- i) receiving journal entries from the source computer system;
- ii) checking the journal entries to see if any entry exists in a dynamic index giving processing information relating to a database member to which the journal entry relates, wherein the processing information comprises the required manner of processing the journal entry;
- and
- iii) if an entry exists in the dynamic index, processing the journal entry according to the associated processing information;
- iv) if an entry does not exist in the dynamic index, looking up the related processing information for the member in an assignment database, creating an entry and storing it in the dynamic index, and processing the journal entry according to the processing information;
- v) receiving information from the source system;
- and
- vi) assigning the information strings to serialization groups for processing such that interrelated information strings are processed in the same serialization group.
In a database replication computing system, a computer implemented method of replicating a database from a source computer system to a target computer system comprising, at the database replication computing system, the steps of:
- i) receiving journal entries from the source computer system;
- and
- ii) allocating serialization groups to process journal entries and update the target database, wherein an overarching control program within the database replication computing system allocates tasks to serialization groups and controls the serialization groups substantially without serialization groups interacting with one another to replicate the database.
Dependencies are inferred from the claim text.