dirty data 中文意思是什麼
dirty data
解釋
錯資料-
Aiming at the characteristics of long - term task in workflow, a workflow transaction model based on backward recovery was surveyed, which could avoid the situation of reading dirty data, simplify confliction analysis, and provide efficient workflow transaction management
針對工作流的長時間作業的特點，論文提出了一個基於向後恢復的工作流事務模型，可以避免讀臟數據以及簡化事務沖突分析，實現高效率的細粒度的工作流事務管理。 -
In sql server 2005, you can also minimize locking contention while protecting transactions from dirty reads of uncommitted data modifications using either
在sql server 2005中，您還可以使用下列任意一種方法，在保護事務不臟讀未提交的數據修改的同時盡量減少鎖定爭用： -
Preprocessing converts the original dirty data into normalized data. data denoise and compress are the core of the whole process
在整個數據處理過程中，數據除噪和數據壓縮是預處理的核心。 -
This paper describes the basic features and components of data warehouse system, and deals how to use description - driven technology to integrate different data warehouse systems, how to implement the change from one data schema to another, how to clean dirty data in data transformation process, and how to exchange data among different components or systems. at last, this paper takes two products to illustrate how to implement systems following these principles and methods. these two products are the e - chain system as an application in commerce domain, and the ftedws system as an application in engineer test domain
本文分析了數據倉庫系統軟體的基本特徵，提出了利用描述驅動技術來實現數據倉庫系統的集成管理，描述了etl操作和分析處理的基本處理流程和相應的執行構件，定義了集成框架中數據模式轉換規則和數掘清洗規則，構建了一個基於星型模式和對象模型的分析模型和相應的數據查詢語言，提出了集成框架系統構件間的數據交換標準，並定義了基於此標準的的數據交換和元數據交換方法，探討了集成框架標準構件管理的基本方法和權限管理，最後介紹了數據倉庫集成框架系統在商業領域的應用實例e - chain系統和工程試驗領域的應用實例ftedws系統。 -
Db2 page cleaners essentially have the responsibility of removing dirty or unneeded data from the bufferpools to disk
Db2頁面清理器實際上要負責將臟數據或不需要的數據從緩沖池轉移到磁盤。 -
Database writer dbwr writes to physical data files the dirty bits of buffer asynchronously
數據庫讀寫器（ dbwr ）異步地將緩沖區的臟數據寫到物理數據文件中。 -
Dirty read : thread one writes data ; thread two reads what thread one wrote
線程1寫入了數據，線程2讀取了線程1所寫入的數據。 -
A lower isolation level increases the ability of many users to access data at the same time, but increases the number of concurrency effects such as dirty reads or lost updates users might encounter
較低的隔離級別可以增強許多用戶同時訪問數據的能力，但也增加了用戶可能遇到的並發副作用（例如臟讀或丟失更新）的數量。 -
A lower isolation level increases the ability of many users to access data at the same time, but increases the number of concurrency effects, such as dirty reads or lost updates, that users might encounter
較低的隔離級別會提高多名用戶同時訪問數據的能力，但是也會增加用戶可能遭遇的並發影響（如臟讀或更新丟失）的次數。 -
Dirty read : thread one writes data ; thread two reads what thread one wrote. thread one then overwrites the data, thus leaving thread two with old data
線程1寫入了數據，線程2讀取了線程1所寫入的數據。線程1更改了數據，最後線程2讀取的是沒有更新的舊數據。 -
In other words, all dirty bits of the data buffer will be flushed to the data files
換句話說，將把數據緩沖區的所有臟位刷新到數據文件。 -
We intercept and capture the read and write system calls via putting the nvram on the request queue. then observing the capacity of the " dirty " data, we redirect the writing direction to the hard disk while detecting the proportion of the " dirty " data exceeds the limit
通過文件系統對數據讀寫操作流程的分析，在系統的request隊列中將其讀寫的對象置換為nvram ，從而實現數據讀寫的截取和轉向，然後對nvram的臟數據容量進行檢測，當其到達nvram容量的一定比例后，調用相應的程序把臟數據對外設回寫。 -
It may also be helpful to developers who find themselves in situations where quick - and - dirty data access is required, but who don t want to compromise too much stability and reuse
本教程還可能有助於那些覺得偶爾需要以快捷但不恰當的方式進行數據訪問，但又不想過多危及穩定性和重用的開發人員。
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