{"id":21755,"date":"2018-08-06T04:00:26","date_gmt":"2018-08-06T04:00:26","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=21755"},"modified":"2021-03-09T21:28:08","modified_gmt":"2021-03-09T15:58:08","slug":"sql-rdbms-database","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/sql-rdbms-database\/","title":{"rendered":"SQL &#8211; RDBMS Database System (Modern) | Features &amp; Types"},"content":{"rendered":"<p>In this tutorial, we will understand what a database is and why we require a database.<\/p>\n<p>We will discuss all the details of a database and the pros and cons of some of the popular databases. Let us dive into our topic now.<\/p>\n<h3>What is a Database?<\/h3>\n<p>A database is used to store and maintain data generated. We can even use the database to handle the time-dependent generation of data or the robust data generated.<\/p>\n<p>When we think about a database, we usually want a system that could handle and maintain the data for a longer run.<\/p>\n<p>An ideal database should be able to handle the CRUD operations, i.e. the create, retrieve, update, and delete operations. Also, a database should be compatible with the backend tech-stack we are using.<\/p>\n<p>Thus, we always look for a database that is versatile and is compatible with almost all technologies.<\/p>\n<h3>What is the need for a Database?<\/h3>\n<p>The database systems that we use in our day-to-day life should be able to perform basic CRUD operations.<\/p>\n<p>When we think of a supermarket we can visualize the variety of products available but imagine how difficult it would become to handle the same if they don\u2019t have a proper database.<\/p>\n<p>Everything would be a Brownian motion if the price of each commodity is not already in the system and instead the billing agent needs to remember or manually check the price of each.<\/p>\n<p>Also, we need to make sure that our system or database is stable and can handle the multiple queries being made on it regularly.<\/p>\n<p>Thus we can say that the basic properties we need in a database are as follows:<\/p>\n<ul>\n<li>Stability<\/li>\n<li>Reliability<\/li>\n<li>Scalability<\/li>\n<li>Security<\/li>\n<\/ul>\n<h3>Types of DBMS<\/h3>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-86696\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS.jpg\" alt=\"Types of DBMS\" width=\"894\" height=\"376\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS.jpg 894w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-300x126.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-150x63.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-768x323.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-720x303.jpg 720w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-520x219.jpg 520w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Types-of-DBMS-320x135.jpg 320w\" sizes=\"auto, (max-width: 894px) 100vw, 894px\" \/><\/a><\/p>\n<p>We have four major types of databases available:<\/p>\n<p><strong>1. Hierarchical Database<\/strong><\/p>\n<p>These DBMS employ parent and child relationships to store the data. Hierarchical DBMS is wide.<\/p>\n<p>They store data in a tree-like structure so that it is easy to find and use. Similarly, the configuration of the DBMS is present in the nodes of the tree.<\/p>\n<p><strong>2. Network DBMS<\/strong><\/p>\n<p>Network DBMS supports many-to-many relations which results in complex database structures.<\/p>\n<p>RDM Server is a major example of the network DBMS.<\/p>\n<p><strong>3. Relational DBMS<\/strong><\/p>\n<p>Relational DBMS stores data using the database relationships in the form of tables, also known as relations or tuples.<\/p>\n<p>They do not support many to many relationships and have pre-defined data types that they can support. They are the most popular DBMS type in the industry.<\/p>\n<p>Example: Oracle, MySQL, MS SQL, etc.<\/p>\n<p><strong>4. Object-Oriented Relational DBMS<\/strong><\/p>\n<p>This DBMS supports the storage of miscellaneous data types. They store data in the form of objects.<\/p>\n<p>The object has attributes (i.e., name, id, gender, etc.) and the logic for what needs to be done with the data. Example: PostgreSQL.<\/p>\n<h3>Popular Databases<\/h3>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-86697\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases.jpg\" alt=\"Popular Databases\" width=\"850\" height=\"650\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases.jpg 850w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-300x229.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-150x115.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-768x587.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-720x551.jpg 720w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-520x398.jpg 520w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Popular-Databases-320x245.jpg 320w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/a><\/p>\n<h4>1. Oracle<\/h4>\n<p>Oracle database came into existence in the late 70s and has many versions available for use. It is compatible with the cloud and is deployable on one or more servers.<\/p>\n<p>Also, the logical data does not affect the physical data. We get an upgraded level of security as the transactions are done in different sessions thus, avoiding any possibility of a clash.<\/p>\n<p><strong>Pros:<\/strong><\/p>\n<ul>\n<li>Provides the latest innovations and features.<\/li>\n<li>Oracle DBMS tools are incredibly robust thus, capable of performing almost any<\/li>\n<li>possible task.<\/li>\n<\/ul>\n<p><strong>Cons:<\/strong><\/p>\n<ul>\n<li>It is an expensive tool for smaller organizations.<\/li>\n<li>Requires a large number of regular hardware updates.<\/li>\n<\/ul>\n<h4>2. MySQL Database<\/h4>\n<p>One of the most popular databases for all the available technological requirements. It is freeware and thus is ideal for both small and large-scale organizations.<\/p>\n<p>MySQL provides us with the choice to configure the data types to accommodate any possible data we have. Also, it is reliable and has no large resources required.<\/p>\n<p><strong>Pros:<\/strong><\/p>\n<ul>\n<li>It is freeware thus cost-efficient.<\/li>\n<li>Provides a large number of functionalities.<\/li>\n<li>It supports various user interfaces for easy use.<\/li>\n<li>Compatible with other DBMS like Oracle and DB2.<\/li>\n<\/ul>\n<p><strong>Cons:<\/strong><\/p>\n<ul>\n<li>It is a bit slow compared to other DBMS.<\/li>\n<li>There is no built-in support for OLAP.<\/li>\n<li>Consumer support is not available for the free version.<\/li>\n<\/ul>\n<h4>3. Microsoft SQL Server<\/h4>\n<p>This DBMS works on a cloud-based system or a local server.<\/p>\n<p>Some of the major features include the tracing facility of any changes in the data. It also allows dynamic data masking which helps in protecting the sensitive data stored.<\/p>\n<p><strong>Pros:<\/strong><\/p>\n<ul>\n<li>This is a reliable and fast DBMS.<\/li>\n<li>Has the ability to adjust to available resources, hence is very resource-efficient.<\/li>\n<li>Provides easy visualizations for mobile devices.<\/li>\n<li>Compatible with all Microsoft products.<\/li>\n<\/ul>\n<p><strong>Cons:<\/strong><\/p>\n<ul>\n<li>This DBMS is very expensive to use.<\/li>\n<li>Many times leads to hampered resources.<\/li>\n<li>Not compatible with importing and exporting data files.<\/li>\n<\/ul>\n<h4>4. PostgreSQL Database<\/h4>\n<p>One of the major free popular databases and is frequently used in web applications. It supports deployment in various environments i.e. virtual, physical, and cloud-based environments.<\/p>\n<p>The newer versions have support for large volumes of data. Security has also improved.<\/p>\n<p><strong>Pros:<\/strong><\/p>\n<ul>\n<li>A scalable and adjustable DBMS.<\/li>\n<li>Provide built-in support for the JSON data.<\/li>\n<li>Provides plenty of predefined functions.<\/li>\n<li>It is available in various versions of user interfaces.<\/li>\n<\/ul>\n<p><strong>Cons:<\/strong><\/p>\n<ul>\n<li>Proper documentation is not available.<\/li>\n<li>The configuration is very confusing and complex.<\/li>\n<li>Speed hampers due to batch operation of queries.<\/li>\n<\/ul>\n<h4>5. DB2<\/h4>\n<p>It is the DBMS that was found by IBM for their internal use and was later released for public use. One of the most important and evident features is faster-skipping technology.<\/p>\n<p>Data skipping helps in increasing the system speed and boosts the effective use of resources. It has added disaster recovery options that increase reliability and compatibility.<\/p>\n<p><strong>Pros:<\/strong><\/p>\n<ul>\n<li>Due to the high-speed, the handling of enormous data becomes easier.<\/li>\n<li>Compatible with cloud, physical server, or both at the same time.<\/li>\n<li>Task automation is available as it provides the task scheduler.<\/li>\n<li>Provides proper error codes and exit codes which make debugging easier.<\/li>\n<\/ul>\n<p><strong>Cons:<\/strong><\/p>\n<ul>\n<li>Expensive for small organizations or individuals.<\/li>\n<li>Making functional nodes or clusters demands third-party tools.<\/li>\n<li>Support is available for three years after that you need to pay for the support.<\/li>\n<\/ul>\n<h2>Summary<\/h2>\n<p>In this tutorial, we have understood what a database is and why we need a database. We have also understood the working of a database.<\/p>\n<p>We further briefly saw the types of the database. Coming to the end, we learned about some of the most famous and extensively used databases.<\/p>\n<p>We discovered the pros and cons of the DBMS systems available in the industry.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this tutorial, we will understand what a database is and why we require a database. We will discuss all the details of a database and the pros and cons of some of the&#46;&#46;&#46;<\/p>\n","protected":false},"author":6,"featured_media":86695,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[4614,4625,5666,5670,11332,11333,11335,13524,15101],"class_list":["post-21755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sql","tag-features-of-ms-sql-server","tag-features-of-rdbms-mysql","tag-history-of-ms-sql-server","tag-history-of-rdbms-mysql","tag-rdbms-database-system","tag-rdbms-example","tag-rdbms-ms-access-history","tag-sql-rdbms-database","tag-types-of-rdbms"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL - RDBMS Database System (Modern) | Features &amp; Types - DataFlair<\/title>\n<meta name=\"description\" content=\"RDBMS database System: features &amp; 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