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such data to tables in different databases? We can do this by putting user_id all the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation. The next problem to solve is how to find a specific database? In fact, the problem is
Due to the needs of a customer friend, need my WinForm development framework to support the operation of the national Dream database, this database has been heard very early, but the real general project with very little, generally in some special projects may need to use. Since my WinForm development framework is based on the implementation of the data access layer of Enterprise
Due to the needs of a customer friend, need my WinForm development framework to support the operation of the national Dream database, this database has been heard very early, but the real general project with very little, generally in some special projects may need to use. Since my WinForm development framework is based on the implementation of the data access layer of Enterprise
the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation.The next problem to solve is how to find a specific database? In fact, the problem is simple and obvious, since the Sub-Library
the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation.The next problem to solve is how to find a specific database? In fact, the problem is simple and obvious, since the Sub-Library
, so why not try to split horizontally?3. mysql level shard (sharding)This is a very good idea, the user according to a certain rule (by ID hash) group, and the group of users of the data stored in a database shard, that is, a sharding, so as the number of users increased, as long as the simple configuration of a server, the schematic is as follows: How to determine the Shard of a user, you can build a user and shard corresponding data table, each re
Recently, I used the space database, in accordance with the online has been a tutorial on the configuration and construction of the library after some of the problems of the St_geometry class library, in the lookup data toss after the deployment finally resolved, hence for the purposes of this article only for exchange reference. First, use the "Create Enterprise
Label:I am currently working in an entrepreneurial internet company, since it is an internet company, it will be designed to either application systems or databases distributed. The following is a brief introduction to some of the database aspects of the design.database table design, according to their own business needs can be split into multiple libraries. There are order libraries, product libraries, account libraries, underlying payment libraries,
In many of our projects, data access is essential, with access to the regular databases of Oracle, SQL Server, MySQL, and possibly to SQLite, access, or some of the PostgreSQL, IBM DB2, or domestic dream database, and so on, the common characteristics of these databases are relational database, basically developed models are similar, but if we are based on the development of the basis of ADO, then all kinds
Learn while learning PHP-(16) PHP uses the MySQL extension library to operate on the database PHP provides a lot of extension libraries. here we are talking about using the MySQL extension Library, however, such extension libraries will be discarded in the near future, because if the code written in the MySQL extension Librar
may be very large2, show slave status display parameters Relay_master_log_file and Master_log_file display bin-log number difference is very large, indicating that bin-log from the library did not synchronize in time, So the recently executed Bin-log and the current IO thread read the bin-log is very different3, MySQL from the library data directory there are a large number of Mysql-relay-log log, the log
This function library is used to access the MySQL database. For MySQL details, and download MySQL database, please visit this Web site http://www.mysql.com. The Network also has a lot of user interface programs to process MySQL, it is recommended to download phpMyAdmin to the http://www.phpwizard.net/phpMyAdmin, you can use the browser to operate and manage MySQL
database reading and writing separation and vertical sub-Library, horizontal sub-table As the business of a website expands, data increases, the pressure on the database becomes larger, and the basic optimization of the database or SQL may not be the ultimate result, we can use a read-write separation strategy to chan
Reprinted from: http://mp.weixin.qq.com/s/_HB7Iq9chDLk2z_m_btq9w Origin User Center is essential for almost every company basic services, user registration, login, information query and modification are inseparable from the user center. When the amount of data is increasing, a multi-user center is required for horizontal segmentation. The most common horizontal slicing method, according to the UID modulo sub-Library: Through the UID modulo, the d
In the. NET Core class library, use EF Core to migrate the database to SQL Server. coreef Preface If you just use EntityFramework Core as the orm framework, you may encounter database migration problems. At first, I was in ASP. NET Core Web project, but later found that it is not very reasonable to put it here, some database
such data to tables in different databases? We can do this by putting user_id all the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation. The next problem to solve is how to find a specific database? In fact, the problem is
article (article) table, which has the following fields: In the face of such a table, how do we slice it? How do you distribute such data to tables in different databases? We can do this by putting user_id all the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation. T
This function library is almost exactly the same as the SQL Server database function library, which is actually the first occurrence of this function before the SQL Server database function library appears. Sybase and MS SQL Server 6.x are almost identical to the user's poi
This is a creation in Article, where the information may have evolved or changed. In the Go Language world, Beego Orm, Gorm, SQLX, Gorp, and Xorm are the most up to go database frameworks I've known in GitHub, these are the old database framework libraries in the Go language world. One of the Beego ORM is Beego's own ORM Framework library, statistics of star num
the article information in the 1~10000 into the article table in DB1, user_id all the article information in 10001~20000 into the DB2 table, and so on, until article. In this way, the article data is naturally divided into various databases, to achieve the purpose of data segmentation.The next problem to solve is how to find a specific database? In fact, the problem is simple and obvious, since the Sub-Library
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