TOP-5 database management systems
A database management system (abbreviated as DBMS) is software for creating and working with databases.
The main task of the DBMS is to manage information that is located both in external and in RAM. The DBMS supports database languages, and is also responsible for copying and restoring information after any failures.
MySQL
MySQL is the most widely used database management system. It is used by many large companies such as Facebook, Wikipedia, Twitter, LinkedIn, Alibaba and others. MySQL is a relational DBMS that is free software: it is distributed under the terms of the GNU Public License. This is a fairly fast and flexible DBMS, which is great for working with small and medium-sized projects.
Considering the advantages of MySQL, one can first of all single out a wide variety of tables, from the more well-known MyISAM and InnoDB, to non-standard HEAP and MERGE. In this regard, MySQL is constantly evolving and increasing the number of supported tables. Compared to other systems, MySQL is very fast. Another advantage would be the possibility of simultaneous access by an unlimited number of users. And the amount of data can reach up to 50 million. This option is well suited if you are considering working with a database in tabular form.
MySQL
MySQL
The not too extensive functionality of this DBMS, compared to others, makes it easier to work with it.
You can work with MySQL in two modes: text and graphics. The transition from one mode to another is possible thanks to the phpMyAdmin application. To work in this application, you do not need to know SQL commands. You can manage your database through a regular browser without additional programs.
MySQL is perfect for those who need a fast, simple, and understandable DBMS for working with projects.
PostgreSQL
This type of DBMS is object-relational. PostgreSQL is freely available. Its work is based on the SQL language, however, unlike MySQL, PostgreSQL supports the SQL-2011 standard. The big advantage of this database management system is the unlimited number of entries in the table and the unlimited size of the database.
When choosing a DBMS, note that PostgreSQL provides transactional and replication reliability, inheritance, and easy extensibility. PostgreSQL supports various extensions and variants of programming languages such as PL/Perl, PL/Python, and PL/Java, including C-compatible modules.
Compared to MySQL, the PostgreSQL DBMS boasts a thorough description of all the functions and features in the official documentation.
At the moment, PostgreSQL is considered one of the most advanced database management systems. In terms of its functionality, it is very extensive and is on a par with such a powerful DBMS as Oracle.
SQLite
If you are looking for a compact and embeddable DBMS, then pay attention to the relational SQLite.
SQLite is fast, which is achieved by storing all data in one file and the minimum amount of memory occupied. The structure of SQLite differs significantly from more powerful DBMSs such as MySQL and PostgreSQL. Because the SQLite engine and interface are in the same library, querying and parsing information is very fast. Other DBMS (MySQL, PostgreSQL, Oracle, etc.) use the "client-server" paradigm when the interaction takes place through a network protocol. An excellent option for working with information databases.
However, despite the advantages of this DBMS, it has its drawbacks: the absence of a user system and the impossibility of increasing productivity.
Oracle
This data management system is of the object-relational type. Its name goes back to the company that created this system - Oracle. Just like SQL, it uses a procedural extension called PL/SQL, as well as the Java language.
Oracle has established itself as a reliable and stable system that provides high protection for the database of organizations and guarantees security. It is preferred by large corporations, which primarily pay attention to the ability to quickly restore data after failures, a streamlined backup procedure, scalability, and other valuable features.
Oracle
But the price for using this DBMS is much higher than for others. Therefore, its users are predominantly large firms rather than small or medium-sized enterprises. Despite all its advantages and being ahead of competitors in terms of functionality and characteristics, the price of access and further maintenance of Oracle lowers it in the 2016 rating in Russia to 6th place.
MongoDB
This type of DBMS is primarily aimed at storing hierarchical data structures. It is also called document-oriented. In other words, MongoDB is an open-source document store without the use of tables or schemas.
Several factors contribute to the high speed of operation. First, is the use of an identifier, which allows you to perform quick operations on the object. Secondly, since MongoDB belongs to the class of non-relational databases, it means that it uses an object query language. Therefore, applications that look the same at first glance will differ in performance depending on the DBMS used.
Unlike more complex DBMS, MongoDB has many limitations in functionality. Therefore, this option should be selected when storing databases of simple projects.
Make clear requirements for choosing a database management system. Push away from what you need first. Try several database models and decide what is most convenient and profitable for you.
