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1.hierarchical storage structure      This notion of inserting a smaller, faster storage device (e.g., cache memory) between the processor and a larger slower device (e.g., main memory) turns out to be a general idea. In fact, the storage devices in…
物理存储结构主要是指: extent的分配, 以及datablock 存储相关, 置于tablespace, segment 都是逻辑结构. tablespace : 逻辑结构, 没有实际物理存储. segment : 逻辑结构, 比如一个表, 索引等 object, 每次按照extent分配. extent : 物理结构,  物理上连续的 data block, 是一次分配的最小单位, extent 与 extent 之间可以是不连续的, 但是extent 内部的data block 是连续的…
1. Multiprogramming system provide an environment in which the various resources (like CPU,memory,and peripheral devices) are utilized effectively,but they do not provide for user interaction with the computer system. 2. Time sharing(or multitasking)…
BACKGROUND Many algorithms on a graphics processing unit (GPU) may benefit from doing a query in a hierarchical tree structure (including quad-trees, oct-trees, kd-trees, R-trees, and so forth). However, these trees can be very deep, whereby traversi…
An apparatus comprising a plurality of storage nodes comprising a plurality of corresponding storage disks and configured to store data in a distributed manner between the storage disks that achieves a Redundant Array of Independent Disks-0 (RAID0) l…
CreateFile函数详解 CreateFile The CreateFile function creates or opens the following objects and returns a handle that can be used to accessthe object: files pipes mailslots communications resources disk devices(Windows NT only) consoles directories(open…
CreateFile函数详解 CreateFile The CreateFile function creates or opens the following objects and returns a handle that can be used to accessthe object: files pipes mailslots communications resources disk devices(Windows NT only) consoles directories(open…
CreateFile The CreateFile function creates or opens the following objects and returns a handle that can be used to accessthe object: files pipes mailslots communications resources disk devices(Windows NT only) consoles directories(open only) CreateFi…
CreateFileThe CreateFile function creates or opens the following objects and returns a handle that can be used to accessthe object: files pipes mailslots communications resources disk devices(Windows NT only) consoles directories(open only) CreateFil…
持续关注MongoDB博客(https://www.mongodb.com/blog)的同学一定会留意到,技术大牛Daniel Coupal 和 Ken W. Alger ,从 今年 2月17 号开始,在博客上持续发表了 如何在MongoDB中设计数据库模式的方法.截止到今日(4月20号),12种模式设计的方法已全部与读者见面.本人认为,此系列文章,总结的非常全面,很多地方有首创性,涵盖的场景也很多,并且有理论总结,也有案例分析.文中分享的很多知识使人"如听仙乐耳暂明",开卷受益,常读…