oanda historical

From: http://rdc.taobao.com/blog/dba/html/124_oracle_data_transfer.html Author: Ding yuan For high-concurrency OLTP systems, the production database may only need to retain the data for the current few months, and all the previous data must be migrated to the historical database. So how can we deal with such requirements and Write appropriate historical migration programs?1. Conventional writingBegin -- Mi

product of Wonderware in the United States, which has application cases in power plants in China. Industrial SQL is a real-time/historical database based on commercial relational databases. Its kernel is Microsoft's SQL server. It has good security, ease of use, and fault tolerance, and can be expanded. Client applications include the Report and Analysis Software Package activefactory, the real-time device performance analysis and optimization softwa

Oracle uses shell to test historical data samples Shell has been used to analyze some data for some time, and the data analysis is based on historical data. Today, I wrote a script to perform a simple analysis of historical data, see how accurate it is. Here is a script 12c. sh used to analyze the percentage of some data. For example, there are two teams today. T

Business scenario 3: Optional architecture and flexible data aggregation. You want to specify a key date. The report uses the key date to calculate the business income of the parent company. That is, if you specify July 1 as the key date, the report willOld Organizational StructureFor statistical standards, the income of subsidiaries AAA and BBB is recorded in the account of Parent Company X, and the income of CCC is recorded in the account of parent company Y. The data of the DDD subsidiary d

The Linux history mechanism numbers the commands entered on the command line and saves them to maintain the command history. Commands entered during a logon session are saved in shell memory and added to the history file if the Abort command is removed.1. Arrow Symbol Direction keyUse the arrow keys on your keyboard to get historical instructions from a history file, and you can make changes after you access the history commands.2. History directiveHi

1. Preface In the mind of deletion, the basic cognition is delete, subdivided into deleted documents (document) and delete index; To delete historical data, the basic cognition is: Delete the data of the given condition, use Delete_by_query.Actual operation found:-After you delete the document, the disk space does not decrease immediately, but it increases.-There is no better way to do it than to +delete_by_query a timed task. 2. Common Delete Operati

RDS for MySQL Archives historical data by partition Original table Partition Stored procedures for partition maintenance Events that call a stored procedure every month with the accumulation of data and the increase of data volume, more and more table volume becomes large, not only affect the execution time of query, but also make management work (such as adding and deleting index) become more complex and difficult.This article descr

The historical background of "1" MTK debutIf the 1960 is the era of mainframe (Mainframe) , the 1970 's is the era of minicomputer (microcomputer) , then the 1980 is undoubtedly the era of personal computers (PC), And the 1990 's is the era of the Internet. What about after 2000? Perhaps the era of mobile internet.Similar to the development of the computer, the development of the mobile Internet, it seems to be the same as the hardware improvement as

Method for clearing historical records, SQLSERVER history Back up data before deletion. When using SQL Server to log on to the database, the logged-on records will appear in the logon box. The following is the deletion method: SQL Server 2008Delete the drive letter \ Documents and Settings \ User \ Application Data \ Microsoft SQL Server \ 100 \ Tools \ Shell \ SqlStudio. bin. \Or: running the database directlyIn the address bar of win7, enter the fol

Windows forfiles (delete historical files) and Windows forfilesIntroduction Forfiles is a batch DELETE command that comes with windows. It is a good option to determine the time by modifying the date attribute of the file itself and use it to delete historical files. Syntax Forfiles [/p Path] [/m SearchMask] [/s] [/c Command] [/d [{+ |-}] [{MM/DD/YYYY | DD}] [/P Path]: Specifies the Path. Of course, you c

Due to improper permission control of the Tang Dynasty scanner, you can view some historical vulnerability details. Due to improper permission control of the Tang Dynasty scanner, you can view some historical vulnerability details. Search Baidu directly.Site: tangscan.comExample address Found Http://tangscan.com/auth/p8SY0%252B8RdM3f8BvcwAIbsoEnFRi75%252BY%252Feq6tfDCeIoOpPKu38prYhttp://tangscan.com/auth

HTTP protocol is the basic protocol of the internet, but also the necessary knowledge of Web development, the latest version of HTTP/2 is to let it become a technical hotspot.This paper introduces the historical evolution and design ideas of HTTP Protocol.first, http/0.9HTTP is an Application-layer protocol based on the TCP/IP Protocol. It does not involve packet (packet) transmission, mainly specifies the communication format between the client and t

JavaScript Documentvar bookcate=new Array ();Bookcate[0]= "Book_history";Bookcate[1]= "book_family";Bookcate[2]= "Book_culture";Bookcate[3]= "Book_novel";var bookclass=new Array ();Bookclass[0]= "History";bookclass[1]= "Family";bookclass[2]= "Culture";Bookclass[3]= "novel";function bookputup(elementid) {for (Var i=0;iif (elementid==i) {document.getElementById (Bookcate[i]). Classname= "Book_show";document.getElementById (Bookclass[i]). Classname= "Book_type_out";}else{document.getElementById (Bo

The history command is saved in the user's home directory ~/.bash_history after the user logs offHistory #查看系统中 the historical command for real-time caching , not exactly the same as the content in. bash_historyHistory-c #清空历史命令History-w #把缓存中的历史命令写入历史命令保存文件. bash_historyThe storage capacity of historical commands can be changed in/etc/profile by adding histsize=1000.Invocation of the history command:Use th

To download the historical version of the JDK: Http://jingyan.baidu.com/article/9989c746064d46f648ecfe9a.html2. Download the JDK and pass it to the root directory.3. Create a directory and place the JDK extract fileThere are two ways to install JDK in a Linux environment, one for RPM installation and the other for source code (compiled)As a result, two installation files are available on the Oracle website, one in RPM format and the other in GZ

[. Net you must know] 3: Historical entanglement: Characteristics and attributes Author: anytao This article introduces the following: • Basic Concepts and usage of custom features • Comparison of properties and features • A Brief Introduction to reflection 1. Introduction Attribute is a technical highlight introduced by the. NET Framework. Therefore, it is necessary to take some time to understand the content of this article and enter

Menus with historical information Instance description In some software, you can record opened file information in the menu bar to make operations simple and convenient. When you want to open a file that has been opened, you do not need to repeat the search. You only need to select the file that has been opened in the menu to open the file. Run this example, as shown in figure 1. Figure 1 menus with

Software design requires a Historical View Wu Yu Taiyan Network Studio During the National Day holiday, I went to visit Zhao zhouqiao, which is described in our elementary school textbooks. The arch bridge that has existed for more than 1400 years. To be more precise, Zhao zhouqiao was established in 605 AD and was established in 1407. In the meantime, it has experienced 10 floods, 8 wars and multiple earthquakes. So far, the bridge has been repaired

Receives files through Bluetooth and opens the file from the historical transmission record. You cannot select an appropriate application automatically.However, to open the new received file from File Manager, you can select the corresponding application (such as video playerto open the .3gp).mp4 file)The download file is opened in the historical transmission record. The MIME type passed by the recipient wh

First, historical ReviewWith the rapid development of science and technology, has now entered the 4G era, 5G era is about to open. The Android version is fast and is now in its 6.0 version. Occasionally can be seen, mobile phones endanger the current crowd of life, such as staying up late to see the phone will be deeply hurt the eyes, working family on the way down the party, party dinner outside only the mobile phone party. There are some situations,