Mysql Db Schema

As the most popular open source database, MySQL is widely used in Web applications and other small and medium-sized projects. However, in many large IT companies, MySQL has gradually deviated from the original open source version after being highly optimized and customized, more like a branch, such as the Webscalesql of Facebook, which was not long ago open source. 　　Recently, Mr. Xiong has published a blog post, from the perspective of large-scale web site architecture development of the changes in MySQL application, here for you to share. This article mainly describes the different and ...

As a software developer or DBA, one of the essential tasks is to deal with databases, such as MS SQL Server, MySQL, Oracle, PostgreSQL, MongoDB, and so on. As we all know, MySQL is currently the most widely used and the best free open source database, in addition, there are some you do not know or useless but excellent open source database, such as PostgreSQL, MongoDB, HBase, Cassandra, Couchba ...

Oozie is the open source scheduling tool on the Hadoop platform, which has been used Oozie for nearly a year in the project, and the Oozie installation configuration is quite complex. In order to use it conveniently, a lot of configuration needs to be done. 　　The following is a set of steps for Oozie installation configuration, for the use of Hadoop and Oozie children's shoes for reference, but also easy to see their own. 1 Decompression installation package TAR-XZF oozie-3.3.2-distro.tar.gz 2 modified addtowar.sh foot ...

MongoDB company formerly known as 10gen, founded in 2007, in 2013 received a sum of 231 million U.S. dollars in financing, the company's market value has been increased to 1 billion U.S. dollar level, this height is well-known open source company Red Hat (founded in 1993) 20 's struggle results. High-performance, easy to expand has been the foothold of the MongoDB, while the specification of documents and interfaces to make it more popular with users, this point from the analysis of the results of Db-engines's score is not difficult to see-just 1 years, MongoDB finished the 7th ...

Social media, E-commerce, mobile communications, and machine-machine data exchange make terabytes or even petabytes of data that the enterprise IT department must store and process.   Mastering fragmentation best practices is a very important step in the cloud planning process when users process data for cloud computing databases. Fragmentation is the process of splitting a table into a manageable size disk file. Some highly resilient key-value data stores, such as Amazon simple DB, Google App engine ...

MongoDB is currently the best document-oriented free Open-source NoSQL database. If you are preparing to participate in a technical interview for the MongoDB NoSQL database, you might want to look at the following MongoDB NoSQL interview questions and answers. These MongoDB NoSQL interview questions cover the basic concepts of NoSQL databases, replication (Replication), fragmentation (Sharding), Transactions and locks, trace analysis Tools (Profiler), nuances, and logging features. Let's look at the following ...

Recently focused on Hadoop, so I've also been looking at Hadoop related projects.        HBase is an Open-source project based on Hadoop and an implementation of Google's bigtable. What is BigTable? Google's monitors the full explanation. Literally is a big table, in fact, and we imagine the traditional database table is still somewhat different. Loose data can be said to be between M ...

The enterprise database market is huge, with the expertise of Oracle in this area, as well as the Cross-border giants of IBM (DB2) and Microsoft (SQL Server). They are similar to the open source database MySQL commonly used by small and medium-sized enterprises, belong to traditional relational database. It seems that the database market has developed very mature, the basic structure has been determined, so entrepreneurs have no chance? In fact, the emergence and development of new technologies always bring new opportunities. Just as the development and maturity of object-oriented programming technology, DB4O has spawned such pure object-oriented data ...