摘要:
An architecture for a multimedia peer-to-peer home network allows the automated definition of peer groups, or zones, by using group labels, where each peer is capable of automatically identifying whether other peers are members of the same group, or of another group, and where each peer may freely cooperate with other peers of the same group, e.g. exchange information or share resources like storage capacity. Using this architecture, it is e.g. possible that a user who is accessing a node within a peer group has also access to any other node of the peer group, without being requested for authentication. Another characteristic is that other peer groups can be defined which have access rights to network resources and services. Advantageously, the invention simplifies network creation and operation by not requiring the user to have special networking knowledge.
摘要:
An architecture for a multimedia peer-to-peer home network allows the simple definition of peer groups, or zones, where each peer is capable of automatically identifying whether other peers are members of the same group, or of another group, by using group labels. Each peer may freely cooperate with the other peers of the same group, or with peers of previously specified other groups. e.g. exchange information or share resources. The architecture aims to map an atmosphere of trust existing between users to a technical system. namely their respective home networks. Using this architecture, it is e.g. possible that users who trust each other may give each other access to their own home network, or parts of it.
摘要:
The generation of metadata shall be simplified. Therefore, a method is presented in which a metadata-template is filled with selected essence and MD-links obtained from a list of links to essence and/or a list of current metadata. Furthermore, it is possible to obtain the MD-links from further metadata or essences directly or indirectly linked with the selected essence.
摘要:
The use of disk-assisted, dynamic databases is to be optimized. To this end, provision is made for new data intended to update an old stock of data to have a second index, relating to the new data, generated for them, and for said second index to be stored on the disk storage medium as a supplement to the first index relating to the old stock of data. This allows the number of write access operations to the disk storage medium to be reduced. This is particularly advantageous for optical media, whose useful life can be increased as a result.
摘要:
The use of disk-assisted, dynamic databases is to be optimized. To this end, provision is made for new data intended to update an old stock of data to have a second index, relating to the new data, generated for them, and for said second index to be stored on the disk storage medium as a supplement to the first index relating to the old stock of data. This allows the number of write access operations to the disk storage medium to be reduced. This is particularly advantageous for optical media, whose useful life can be increased as a result.
摘要:
In current Distributed Storage Systems, applications may determine the device on which data shall be stored. The invention provides a method for automatically selecting an individual storage device within a DSS. A method for automatically classifying a node in a network comprises determining data classes, automatically classifying data of said data classes stored on a node, determining the amount of stored data per data class, calculating data dominance values for each of the data classes, receiving a request that indicates a data type according to one of said data classes, and providing said dominance value according to the requested data class.Further, a method for automatically organizing nodes in a network comprises receiving a request for storing data of a particular data type, transmitting the request to storage nodes, receiving from the storage nodes respective dominance values, and selecting the node with the highest dominance value for storing the data.
摘要:
In current Distributed Storage Systems, applications may determine the device on which data shall be stored. The invention provides a method for automatically selecting an individual storage device within a DSS. A method for automatically classifying a node in a network comprises determining data classes, automatically classifying data of said data classes stored on a node, determining the amount of stored data per data class, calculating data dominance values for each of the data classes, receiving a request that indicates a data type according to one of said data classes, and providing said dominance value according to the requested data class. Further, a method for automatically organizing nodes in a network comprises receiving a request for storing data of a particular data type, transmitting the request to storage nodes, receiving from the storage nodes respective dominance values, and selecting the node with the highest dominance value for storing the data.
摘要:
Search in stocks of data, particularly on optical media, is intended to be optimized in terms of the time required for the search. It is therefore proposed that the search be carried out in two steps. In a first search step, the entire database is scanned on the disk storage medium. In a second search step, executed in parallel, intermediate results from the first search step are searched. This allows the number of skips on a disk to be reduced, which results in increases of speed, particularly in the case of optical drives.
摘要:
Search in stocks of data, particularly on optical media, is intended to be optimized in terms of the time required for the search. It is therefore proposed that the search be carried out in two steps. In a first search step, the entire database is scanned on the disk storage medium. In a second search step, executed in parallel, intermediate results from the first search step are searched. This allows the number of skips on a disk to be reduced, which results in increases of speed, particularly in the case of optical drives.
摘要:
The present invention relates to a method for ensuring data consistency upon mapping of a hierarchical data format to a relational database management system.According to the invention, a method for ensuring data consistency upon storage of a data item in a database, the data item having an identifier and a locator for linking the data item to a destination, whereby the identifier and the locator are stored in the database in addition to the data item, comprises the steps of: checking (11) whether the current combination of identifier and locator has already been stored in the database, and using (12) the stored combination of the data item if this is the case, in case the current combination of identifier and locator has not yet been stored in the database, checking (13, 15) whether either the identifier or the locator has already been stored in the database, replacing (14, 16) the current combination of identifier and locator with a univocal combination if this is the case, and storing (17) the univocal combination together with the data item, and storing (17) the current combination of identifier and locator together with the data item else.