2 results about "Database catalog" patented technology

Systems, methods are provided for encrypting, decrypting, re-encrypting an existing database with neither downtime nor storage overhead. Create a list of tables to be processed. Identify status of each table by an indicator in a database catalog. Store a second status in each data page. Select a table to process from list of tables. Issue a table lock against the selected table. Select a configurable number of data pages to process during the duration of the table lock. Following the processing, flush the data pages to storage. If there are no more data pages to encrypt for the selected table, remove the selected table from the list of tables to be processed. Release the table lock. If there are more data pages to process in the selected table, and there are waiters for the selected table, release the table lock; select another table from the list of tables to process.

Methods and systems are described for assisting in programming stimulation parameters for deep brain stimulation (DBS) of a subject patient. A cumulative database records a set of stimulation parameters used in a programming session for a plurality of patients and associates the set of parameters with good treatment outcomes and / or side effects. The cumulative database also includes a stimulus field model (SFM) for the set of parameters. The overlap of the SFM for the set of parameters may be associated with a therapeutic effect and used to determine a target volume and / or an avoidance volume for stimulation of the subject patient. In some embodiments, the SFMs may be weighted to de-emphasize the volume near the electrode leads.