Shulou(Shulou.com)06/02 Report--

Today, I will talk to you about what databases are commonly used by programmers, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

The database is the warehouse of data storage, and any Internet product needs to use the database to save all kinds of data generated in the process of operation. SQL is a database query language and programming language, which is mainly used to manage the data in the database, such as accessing data, querying data, updating data and so on. Under the market background of the continuous improvement and application of big data technology, database technology has also been greatly developed. at present, there are many database products, the most commonly used databases are: Oracle, DB2, MongoDB, SQLServer, MySQL and so on.

1. Oracle database

Oracle database management system has been in a leading position in the field of database. It is developed by Oracle (Oracle). At present, with the continuous development of domestic database technology, especially Ali's technology has been successfully international. Oracle database covers dozens of computer models, such as large, medium and small computers, and has become one of the most widely used relational data management systems in the world. The Oracle database management system adopts the standard SQL and has been tested by the American National Institute of Standards and Technology (NIST). Compatible with IBMSQL/DS, DB2, INGRES, IDMS/R, etc., and it can work under operating systems such as VMS, DOS, UNIX, Windows, etc. Not only that, Oracle database management system also has good compatibility, portability and connectivity.

2. SQLServer database

SQLServer is a relational database management system developed by Microsoft, which has been widely used in e-commerce, banking, insurance, power and other industries. SQLServer provides support for XML and Internet standards and has powerful, flexible, Web-based application management capabilities. And the interface is friendly, easy to operate, deeply loved by the majority of users, but it can only run on the Windows platform, and high requirements for the stability of the operating system, so it is difficult to deal with the growing number of users.

3. DB2 database

DB2 database is a relational database management system developed by IBM Company, which is mainly used in OS/2, Windows and other platforms. It has good scalability and can support from a large computer to a single user environment.

DB2 supports standard SQL, and provides high-level data utilization, integrity, security and recoverability, as well as the execution ability from small-scale to large-scale applications, which is suitable for the storage of massive data, but compared with other database management systems, the operation of DB2 is more complex.

4. MongoDB database

MongoDB is a product between relational database and non-relational database developed by 10gen Company. it is the most functional and most like relational database among non-relational databases. It supports a very loose data structure, which is similar to JSON's bjson format, so it can store more complex data types.

The most important feature of Mongo database management system is that the query language it supports is very powerful, and its syntax is somewhat similar to the object-oriented query language. It can not only achieve most of the functions similar to the single table query of relational database, but also support the establishment of data index. Not only that, it is also an open source database, and has the characteristics of high performance, easy to deploy, easy to use, easy to store data and so on. For Internet applications with large amount of data, high concurrency and weak transactions, MongoDB can fully meet the data storage needs of Web2.0 and mobile Internet.

5. MySQL database

The MySQL database management system was developed by the Swedish company MySQLAB, but after several twists and turns, it is now an Oracle product. It is implemented in "client / server" mode, and it is a small database server with multi-user and multi-thread. And MySQL is open source data, so anyone can get the source code of the database and fix the defects in MySQL. MySQL has cross-platform features, it can be used not only on the Windows platform, but also on UNIX, Linux and MacOS platforms. Compared with other databases, MySQL is more convenient and fast to use, and MySQL is free, low operating costs, so more and more companies begin to use MySQL.

After reading the above, do you have any further understanding of the databases commonly used by programmers? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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