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}); {"collectionsharded": "Mydb.test", "OK": 1} mongos> sh.status (); ---sharding Status---sharding version: {"_id": 1, "mincompatibleversion": 5, "Currentversi On ": 6," Clusterid ": ObjectId (" 561728b4030ea038bcb57fa0 ")} shards: {" _id ":" Sh0 "," host ":" SH0/1 72.30.2.201:27010"} {" _id ":" SH1 "," host ":" sh1/172.30.2.201:27011 "} balancer:currently enabled:yes Cur rently Running:no Failed balancer rounds in last 5 attempts:0 migrati
Note: yii supports the database migration feature only after version 1.1.6. Like the source code, the database structure continues to grow as we develop and maintain database-driven applications. for example, during development, we may want to add a new one... Note: yii supports the database migration feature only after version 1.1.6. Like the source code, the database structure continues to grow as we de
Original link: http://www.ibm.com/developerworks/cn/cloud/library/1508_wangyx_openstacklivemigrate/Migration (migration) is the move of a virtual machine from one physical host to another, and dynamic (live) is that the virtual machine works during the migration without affecting the user's use. For system administrators, dynamic
Mongodb series: first recognized by Mongodb and first recognized by mongodb Series I. background: We are honored to have taken part in the examination system maintenance at the beginning of the month. (For more information, see the activities we attended in those years: System Maintenance summary for the first half of the 15 years.) It is mainly responsible for s
MongoDB Study Notes (1) -- install MongoDB in Windows and take mongodb Study Notes First, download the windows Installation Package for mongodb from the official website, select a 32-bit or 64-bit version based on your system type, and then follow the prompts to complete the next step. If the installation directory is
Tags: future ogr section best bottleneck gzip diff combo AutoMySQL migration scenarios under different scenariosPosted in MySQL and tagged MySQL, data migration, scheme on Sep 15, 2015. viewd 2684 times. 文/温国兵A catalog A catalog Second why migrate Three MySQL migration Scenarios Overview Four MySQL Migra
Note: Yii does not start to support database migration features until after version 1.1.6. Like the source code, the structure of the database continues to grow as we develop and maintain database-driven applications. For example, during development, we might want to add a new table; Or, after the application has been put into production, we might realize that we need to add an index to a column. It is important to track changes in these database stru
[Learning MongoDB step by step]-Brief Introduction to MongoDB (1), brief introduction to mongodb In the previous blog, we spoke about NoSQL. We have a comprehensive understanding of NoSQL. Starting from this blog, we will take everyone into the MongoDB world. Next we will introduce
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I learn MongoDB time is not long, but in view of the needs of the work and the future trend of development, I want to deeper understanding of the underlying principles of MONGODB and more flexible application of mongodb, learning while working practice.MongoDB belongs to the most popular database in NoSQL, so we might as well have a basic understanding of NoSQL:N
Oracle Database Data Migration Method ---- With the upgrading of database management systems and operating system platforms accelerating, database administrators often need to migrate data between two different databases or between two different system platforms. This article describes the general steps of database data migration and several methods for migrating data to the Oracle8i Database,
Mongodb advanced 3: mongodb management and mongodb advanced management Http://blog.csdn.net/stronglyh/article/details/46827141 Usually, there are many win development environments, but the production environment should be put on unix. I. Command There will be a lot of installation, there are a lot of information on the Internet, the following are some parametersQ
https://msdn.microsoft.com/zh-cn/data/jj591621 Data Access and Storage > Learning > Entity Framework > Getting Started > Code First migration This walkthrough provides an overview of the Code first migration in the Entity Framework. You can complete the walkthrough or jump to a topic of interest to you. The topics are as follows: Enable migration Bui
Tags: blog http ar io using SP on file dataQuickly import Oracle data to MySQL using MySQL migration toolkitCome on, start talking nonsense.I recently learned some knowledge of the database, prior to contact with Oracle and MySQL, and recently very popular MongoDB non-relational database, so simply study together, compare learning to find different, first of all, I use the database version and visualization
Tags: comm har improve. com width TPI Print Monitor ...MongoDB is the most commonly used NODQL database and has risen to the top six in the database rankings. This article describes how to build a highly available MongoDB (shard + replica) cluster. Before you build a cluster, you need to understand several concepts: routing, sharding, replica set, configuration server, and so on.Related conceptsLet's take a
One of the primary MongoDB series: MongoDB installation and recommended configuration; Primary mongodb Analysis The first time I heard about apsaradb for MongoDB, I must have heard a lot about it before I decided to learn about it. No matter what purpose you start to embark on this learning journey, I am also happy to
Summary of considerations for MySQL Migration Solution overview I. Why is MySQL migration a task of DBA routine maintenance. Migration is to remove an existing object to ensure its integrity and continuity. Why migration is required in the production environment? MySQL Migration
As the upgrading of database management systems and operating system platforms accelerates, database administrators often need to migrate data between two different databases or between two different system platforms. This article describes the general steps of database data migration and several methods for migrating data to the Oracle8i Database, and compares their advantages and disadvantages. When the development environment is switched to the run
I. Introduction of row migration and row link in actual work we often encounter some problems with low Oracle database performance. Of course, there are many reasons that cause low Oracle database performance, we can use some correct design and diagnosis to avoid the poor performance of some Oracle databases. RowMigration (row migration) RowChaining I. Introduction of row
disadvantages. The reference mode is regarded as a standardized mode, which reduces data storage redundancy and makes the structure design fresh and simple. In line with our general design principles, the communication overhead for obtaining complete data is relatively large, and the atomicity of operations on multiple documents is not guaranteed at the MongoDB level. The nonstandard nested design mode has the opposite characteristics, which reduces
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