News
►The ADRD (Alzheimer's Disease and Related Disorders) Conclusions Report from the outGRID - ITU workshop held in Geneva on 21st February is now available, presenting the discussion on current context on ADRD research and funding, current problems and challenges, conclusions and follow-up actions.
►A Brain Imaging graduate course is organised by Karolinska Institute for registered students from 19-23 March 2012. Topics of courses will focus on Measurement of Brain Morphology using Magnetic Resonance Images and will be given by various professors. More
►Login planned downtime: the 02/19/2012 from 9:30AM to 2PM. Major VOMS upgrade.
►The EGI Community Forum in conjuction with the 2nd EMI Technical Conference is taking place on 26-30 March in Munich.
►The next N4U Management Meeting is taking place on 21-23 May in Amsterdam.
N4U Persistency Service to Store Information
N4U Persistency Service to Index Metadata and Store Pipeline Execution Outcomes
The N4U Persistency Service complements the N4U Analysis Base acting as a wrapper for storing information into the Analysis Base and retrieving such information. The Persistency Service provides appropriate interfaces for storing the meta-data of datasets (e.g. ADNI datasets) into the Analysis Base such that those datasets, which are actually stored in their entirety on the N4U Grid infrastructure (or other similar repositories), become indexed in the Analysis Base. This index can then be used by other services for allowing users to define their analysis and carry out relevant queries using these datasets.
The Persistency Service also allows the storage of pipeline execution outcomes e.g. one carried out by a user. Similarly, user-annotated data or knowledge-derived by the user through analysis/data annotation are also stored in the Analysis Base through interfaces provided by the Persistency Service. The following diagram illustrates a functional view of the Persistency Service.
It is not expected that the user will interact directly with the Persistency Service; rather this service will act as a facilitator between other services in the system (e.g. Querying Service, Analysis Services) and the Analysis Base.
