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81. 发明授权

US07099888B2 Accessing a remotely located nested object 有权
标题翻译：访问位于远程的嵌套对象
公开(公告)号：US07099888B2
公开(公告)日：2006-08-29
申请号：US10400735
申请日：2003-03-26
申请人： Sreenivas Gollapudi , Debashis Saha
发明人： Sreenivas Gollapudi , Debashis Saha
IPC分类号： G06F7/00
CPC分类号： G06F17/30566 , G06F17/30448 , Y10S707/922 , Y10S707/955 , Y10S707/959 , Y10S707/99931 , Y10S707/99932 , Y10S707/99933 , Y10S707/99944
摘要： A method and apparatus are provided for providing access to a remotely located nested object in a distributed database system. For example, a first server receives a request to access a complex database object that is not situated at the first server. When this occurs, the first server sends a second request to a second server. When the first server receives data in response to the second request, it detects whether the received data includes a reference to a nested object. If the first server detects a reference to a nested object, the first server modifies the received data by replacing the reference with a virtual reference to the nested object. The first server stores mapping data that associates the virtual reference with the reference and with an associated server, wherein the associated server is capable of resolving the reference. The first server forwards the modified data to the requestor.
摘要翻译：提供了一种用于在分布式数据库系统中提供对远程定位的嵌套对象的访问的方法和装置。例如，第一服务器接收到访问不位于第一服务器的复杂数据库对象的请求。当这种情况发生时，第一个服务器向第二个服务器发送第二个请求。当第一服务器响应于第二请求接收数据时，它检测接收的数据是否包括对嵌套对象的引用。如果第一个服务器检测到对嵌套对象的引用，则第一个服务器将使用对嵌套对象的虚拟引用替换引用来修改接收到的数据。第一服务器存储将虚拟参考与参考相关联的映射数据与关联的服务器，其中相关联的服务器能够解析参考。第一个服务器将修改的数据转发给请求者。

82. 发明授权

US06973457B1 Method and system for scrollable cursors 有权
标题翻译：可滚动光标的方法和系统
公开(公告)号：US06973457B1
公开(公告)日：2005-12-06
申请号：US10144665
申请日：2002-05-10
申请人： Mehul Bastawala , Sreenivas Gollapudi , Lakshminarayanan Chidambaran , Srinath Krishnaswamy
发明人： Mehul Bastawala , Sreenivas Gollapudi , Lakshminarayanan Chidambaran , Srinath Krishnaswamy
IPC分类号： G06F17/30
CPC分类号： G06F17/3041 , G06F17/3048 , Y10S707/99933 , Y10S707/99942 , Y10S707/99943
摘要： A method and system for implementing scrollable cursors is described. A multi-tier caching structure is maintained, in which a partial result set is cached at the client computer and a more-complete result set is cached at the server computer. If the cursor is scrolled in either the forward or backward directions, the partial result set cached at the client computer is first checked to see if requested data is present. If so, then the requested data is fetched from the client cache and the current position of the cursor is moved to the appropriate position in the result set. If the requested data is not present in the client cache, then those data items are fetched from the cache at the server computer.
摘要翻译：描述用于实现可滚动光标的方法和系统。维护多层缓存结构，其中部分结果集在客户端计算机缓存，并且更完整的结果集在服务器计算机上缓存。如果光标向前或向后滚动，则首先检查客户端计算机缓存的部分结果集，以查看是否存在请求的数据。如果是这样，则从客户端缓存中取出所请求的数据，并将光标的当前位置移动到结果集中的适当位置。如果请求的数据不存在于客户机高速缓存中，则从服务器计算机的缓存中取出那些数据项。

83. 发明申请

US20050038849A1 Extensible framework for transferring session state 有权
标题翻译：可扩展的会话状态转移框架
公开(公告)号：US20050038849A1
公开(公告)日：2005-02-17
申请号：US10917843
申请日：2004-08-12
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F7/00 , G06F15/16 , G06F17/00 , G06F17/30
CPC分类号： G06F17/30575 , H04L67/148
摘要： Techniques allow a client to be switched from a session on a server to another session on another server in a way that is a transparent to the application for which the initial session was established. Thus, under transparent session migration, a client is switched between sessions without executing application instructions tailored to accomplish the migration. Instead, a client-side interface component, through which the application interacts with the server, handles details of migration, modifying the internal state of the client-side interface component to effect the same. Legacy applications do not have to be modified in order to institute techniques described herein.
摘要翻译：技术允许客户端以对初始会话建立的应用程序透明的方式从服务器上的会话切换到另一台服务器上的另一个会话。因此，在透明会话迁移下，客户端在会话之间切换，而不执行为完成迁移而定制的应用程序指令。相反，应用程序与服务器交互的客户端接口组件处理迁移的细节，修改客户端接口组件的内部状态来实现。传统的应用程序不需要修改，以便建立这里描述的技术。

84. 发明授权

US6112197A Method and apparatus for transmission of row differences 失效
标题翻译：用于传输行差异的方法和装置
公开(公告)号：US6112197A
公开(公告)日：2000-08-29
申请号：US86753
申请日：1998-05-29
申请人： Debashish Chatterjee , Sreenivas Gollapudi
发明人： Debashish Chatterjee , Sreenivas Gollapudi
IPC分类号： G06F17/30
CPC分类号： G06F17/30595 , Y10S707/99933 , Y10S707/99942 , Y10S707/99952
摘要： A method and apparatus for is provided for efficiently transmitting multiple rows of data to a client station. The client station generates a query that is transmitted to a remotely located server, which in turn generates a query result. The server transmits the first row of data from the query result to the client. The remaining rows of data are transmitted by first calculating the difference between successive rows of data. Next, the server sends only the unique rows resulting from the calculated row difference to the client. The server also send an indication of the number of non-repeated value columns detected in order to allow reconstruction of the query result by the client station.
摘要翻译：提供了一种用于有效地将多行数据传输到客户站的方法和装置。客户端站产生一个发送到位于远程的服务器的查询，这又产生一个查询结果。服务器将第一行数据从查询结果发送给客户端。通过首先计算连续的数据行之间的差异来传送剩余的数据行。接下来，服务器将仅从计算出的行差产生的唯一行发送给客户端。服务器还发送检测到的非重复值列的数量的指示，以允许客户端重建查询结果。

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