• 不幸的是,这些技术往往都涉及到打破级别数据重新分配,根据数据表格将其删除

    Unfortunately these techniques often involve breaking up data at the block level and redistributing it, or deleting it based on meta-data tables.

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  • 虽然这意味着数据永远不会写入到位(从来没有被覆盖),而是写入更新数据引用数据

    This means that data is never written in place (never overwritten), but instead new blocks are written and the metadata updated to reference it.

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  • 网络习惯于较大数据块较小字节来表示数据习惯于为单位。

    Networks tend to consider data not in large chunks, nor in tiny bytes, but in packets.

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  • 表示客户每个数据到达本地计算机以进行处理时,数据块临时放在临时目录中

    As each block of data representing a customer arrives in the local machine for processing, it is placed temporarily in a staging directory.

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  • 处理器内核随后选出压缩的、过滤后数据执行基本数据操作排序联接聚合

    A processor core then picks up the uncompressed, filtered data block and performs fundamental database operations such as sorts, joins, and aggregations.

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  • 数据对象类型表示原语分组其他数据对象类型,数据构建

    DataObjectTypes represent groupings of primitives and other DataObjectTypes, and are the building blocks of data graphs.

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  • 顾名思义内存中数据完全驻留存中不是磁盘这使得数据访问传统的基于磁盘数据块要快一个数量级

    As the name implies, an in-memory database resides entirely in main memory rather than on disk, making data access an order of magnitude faster than with conventional, disk-based databases.

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  • 尽管缓存可能一定程度上减轻这种性能影响,但如果使用特定大小数据检索数据支持用户界面分页,则可能出现另一个问题

    Although caching might alleviate this to some degree, another problem might arise if data is retrieved in blocks of a certain size to support user interface pagination.

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  • 处理器可能会一个数据交还内存对这数据执行数十数百操作

    The processor might perform dozens or hundreds of operations on a chunk of data in the cache before relinquishing it to memory.

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  • 脚本可以是在我们数据块传递管道进行数据摄入之前需要任何内容

    This script can be anything we want before the chunk is passed to the pipelines for ingestion.

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  • 使用关系数据一起提供载入工具初始化数据

    Use the bulk load tools that are provided with relational databases to initialize database tables.

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  • 数据根据节点所以这些查询分别在各自数据块通过一个索引过的范围查询得到结果。

    Data is partitioned by node, so these queries can each be answered by a single partition, using an indexed range query.

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  • 随后初始向量(IV)抽取字节数组明文数据进行加密将iv字节置于加密数据字节之前。

    I then extract the initialization vector (IV) into a byte array, block encrypt the clear data, and prefix the IV bytes to the encrypted data bytes.

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  • 当然不能彻底解决及时数据问题但是频繁地写数据也确实促进了更频繁地数据

    Of course, this does not directly address the problem of not writing data blocks in time, but writing metadata more frequently does encourage data to be written more frequently as well.

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  • 没有原始数据映射现在只有新的数据消耗文件系统中的磁盘空间

    Instead of a map to the original data, there are now new blocks with data, consuming disk space in the file system.

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  • 不仅可能同时多个数据写入磁盘而且每当进行修改时马上将每个数据块写入磁盘,也系统性能不利影响

    Not only is it impossible to write multiple data blocks to disk simultaneously, but writing every data block to disk when any part of it changes would be bad for system performance.

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  • 大小拆分功能分隔符拆分类似,也是将文件分为多个较小数据,然后再将这些数据块逐个传输端点组件

    The split-by-size feature is similar to splitting by delimiter because you use it to divide a file into smaller chunks and transfer them to the endpoint component one by one.

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  • 应该经常这样做:在数据数据出来过程中转换数据较小数据放到网络

    And you'll often be doing exactly that: Putting smaller chunks of data on the network, when you transform the data on its way out of the database.

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  • CDATA(字符数据)区域解析器视为数据从而允许数据流中包含任意字符。

    CDATA (character data) sections are treated as a block of data by the parser, allowing you to include any character in the data stream.

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  • 数据缓冲通常数据共享内存最大内存。

    The database buffer pool(s) area is normally the largest component of the database shared memory.

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  • 缓冲区缓存——存储物理数据文件读取数据而分配内存

    Buffer Cache - Memory allocated for storing data blocks read from physical data files.

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  • 出现这种情况原因如下:数据更新删除原先数据任何引用指向磁盘没有填充数据数据块

    Here's why this could happen: the metadata update would erase any reference to the original data block(s), but would point to data block(s) on disk that were never filled with data.

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  • 加载数据队列取出一个数据块时,将执行数据块的前脚本

    When a chunk is taken from the load chunk queue, the chunk pre-script is executed.

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  • 紧凑数据可以针对基于行的数据存储优化SQL执行得更好

    Compact tables can optimize storage blocks for row-based databases and accordingly make SQL perform better.

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  • 如果列值不相同过期数据标记同步随后同步确保数据块正确同步的。

    But if the hashes differ, the out-of-date block is marked as out of sync, and subsequent synchronization ensures that the block is properly synchronized.

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  • 牢记数据构建及其继承关系数据组成,表由字段组成。

    Always keep in mind the building blocks of databases and their hierarchical relationships: databases consist of tables, which consist of fields.

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  • 数据真正发送管道进行摄入之前,将执行数据块脚本。

    Before the chunk is actually sent to the pipelines for ingestion, the pre-script for the chunk is executed.

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  • 每次通过管道处理数据时,会执行数据的后脚本

    Every time a chunk is processed by the pipelines, the post-script for the chunk is executed.

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  • 如果应用程序发送数据大于32K那么应用程序必须大型数据分割32k的数据块,并进行多次dpl。

    If an application had to send more than 32k of data, then the application would handle it by chunking the large data into 32k blocks and doing multiple DPLs.

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  • 数据umf文件一部分数据用于通过管道逐步处理UMF文件

    Chunk: a part of a UMF file, chunks are used to gradually process the UMF files by the pipelines.

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