In this paper the catalog management strategy of the successfully integrating andrunning DDBMS C-POREL is summarized. The new catalog management strategyand its implementation scheme are based on the analysis of the c...In this paper the catalog management strategy of the successfully integrating andrunning DDBMS C-POREL is summarized. The new catalog management strategyand its implementation scheme are based on the analysis of the catalog managementmethods of the pioneer DDBMS. The goal of the new strategy is to improve the systemefficiency. Analysis and practice show that this strategy is successful.展开更多
Multicast capability, including multicast address and multicast rout- ing mechanisms, at the network layer is necessary in order to reduce the band- width requirements of multiparty, multicast applications. Based on h...Multicast capability, including multicast address and multicast rout- ing mechanisms, at the network layer is necessary in order to reduce the band- width requirements of multiparty, multicast applications. Based on hierarchical au- tonomous structure in accordance with the self-organization topologies of Internet, the paper puts forward a multicast address management scheme that is shown to be robust and scalable. Connection control hierarchy (CCH) based on master/slave re- lationship and a simple efficient building algorithm of multi-point connection is also built. The paper also describes the normal operations of multicast address manage- ment and multi-point connection controller. Through simulation experiment, HAM, CM and DDM of Multicast Address Allocation are compared. HAM integrates the merits of CM and DDM, which is efficient as a whole, robust and scalable. CCH raises the efficiency of connection control, and is highly robust, flexible and scalable.展开更多
文摘In this paper the catalog management strategy of the successfully integrating andrunning DDBMS C-POREL is summarized. The new catalog management strategyand its implementation scheme are based on the analysis of the catalog managementmethods of the pioneer DDBMS. The goal of the new strategy is to improve the systemefficiency. Analysis and practice show that this strategy is successful.
文摘Multicast capability, including multicast address and multicast rout- ing mechanisms, at the network layer is necessary in order to reduce the band- width requirements of multiparty, multicast applications. Based on hierarchical au- tonomous structure in accordance with the self-organization topologies of Internet, the paper puts forward a multicast address management scheme that is shown to be robust and scalable. Connection control hierarchy (CCH) based on master/slave re- lationship and a simple efficient building algorithm of multi-point connection is also built. The paper also describes the normal operations of multicast address manage- ment and multi-point connection controller. Through simulation experiment, HAM, CM and DDM of Multicast Address Allocation are compared. HAM integrates the merits of CM and DDM, which is efficient as a whole, robust and scalable. CCH raises the efficiency of connection control, and is highly robust, flexible and scalable.
