{"id":94,"date":"2021-03-02T09:06:12","date_gmt":"2021-03-02T09:06:12","guid":{"rendered":"https:\/\/bcisnotes.com\/fourthsemester\/?p=94"},"modified":"2021-05-26T07:18:52","modified_gmt":"2021-05-26T07:18:52","slug":"introduction-to-dbms","status":"publish","type":"post","link":"https:\/\/bcisnotes.com\/fourthsemester\/introduction-to-dbms\/","title":{"rendered":"Introduction to DBMS || Database Management System || BCIS Notes"},"content":{"rendered":"<h1 style=\"text-align: center;\">Introduction to DBMS<\/h1>\n<p>Introduction to DBMS gives a concept of management system that controls and manages the database. The database is the collection of related data.<\/p>\n<p>A database is an organized collection of related data and data is a collection of facts and figures that can be processed to produce information.<\/p>\n<p>Database Management System or DBMS in short refers to the technology of storing and retrieving user&#8217;s data with utmost efficiency along with appropriate security measures. This tutorial explains the basics of DBMS such as its architecture, data models, data schemas, data independence, E-R model, relation model, relational database design, and storage and file structure, and much more. A database management system stores data in such a way that it becomes easier to retrieve, manipulate, and produce information.<\/p>\n<p>Database<\/p>\n<ul>\n<li>Structured is controlled by a Relational database management system.<\/li>\n<li>Unstructured are those who are not in a particular format.<\/li>\n<\/ul>\n<p>Data are stored in a related form actually in a table. For those data inserted in a table, users need to access them easily when needed. So, there is a management system called the Relational database management system.<\/p>\n<p>DBMS<\/p>\n<p>DBMS is the collection of operations like insertion, updating, and deletion to maintain and manipulate the database as required by the users.<\/p>\n<p>Examples of DBMS:<\/p>\n<ul>\n<li>SQL server like Microsoft SQL server<\/li>\n<li>Oracle<\/li>\n<li>MySQL<\/li>\n<\/ul>\n<p><strong>The characteristics of DBMS are as follows.<\/strong><\/p>\n<ul>\n<li>Provides security and removes redundancy<\/li>\n<li>Self-describing nature of a database system<\/li>\n<li>Insulation between programs and data abstraction<\/li>\n<li>Support of multiple views of the data<\/li>\n<li>Sharing of data and multiuser transaction processing<\/li>\n<li>DBMS allows entities and relations among them to form tables.<\/li>\n<li>It follows the ACID concept (Atomicity, Consistency, Isolation, and Durability).<\/li>\n<li>DBMS supports a multi-user environment that allows users to access and manipulate data in parallel.<\/li>\n<\/ul>\n<p><strong>Advantages of DBMS<\/strong><\/p>\n<ul>\n<li>DBMS offers a variety of techniques to store &amp; retrieve data<\/li>\n<li>DBMS serves as an efficient handler to balance the needs of multiple applications using the same data<\/li>\n<li>Uniform administration procedures for data<\/li>\n<li>Application programmers are never exposed to details of data representation and storage.<\/li>\n<li>A DBMS uses various powerful functions to store and retrieve data efficiently.<\/li>\n<li>Offers Data Integrity and Security<\/li>\n<li>The DBMS implies integrity constraints to get a high level of protection against prohibited access to data.<\/li>\n<li>A DBMS schedules concurrent access to the data in such a manner that only one user can access the same data at a time<\/li>\n<li>Reduced Application Development Time<\/li>\n<\/ul>\n<p><strong>Disadvantage of DBMS<\/strong><\/p>\n<ul>\n<li>The cost of Hardware and Software of a DBMS is quite high which increases the budget of your organization.<\/li>\n<li>Most database management systems are often complex systems, so training for users to use the DBMS is required.<\/li>\n<li>In some organizations, all data is integrated into a single database which can be damaged because of electric failure, or the database is corrupted on the storage media.<\/li>\n<li>DBMS can&#8217;t perform sophisticated calculations<\/li>\n<\/ul>\n<p>If you liked our content HTML Editor, then you may also like <a href=\"https:\/\/bcisnotes.com\/fourthsemester\/acid-properties\/\" target=\"_blank\" rel=\"noopener\">ACID properties<\/a>. Please don\u2019t forget to connect with us through our social media sites. Facebook: <a href=\"https:\/\/www.facebook.com\/OnlineNotesNepal\/\">Online Notes Nepal<\/a>, Instagram:\u00a0<a href=\"https:\/\/www.instagram.com\/online_notes_nepal\/\">@online_notes_nepal,<\/a>\u00a0LinkedIn:\u00a0<a href=\"http:\/\/www.linkedin.com\/in\/onlinenotesnepal\">@onlinenotesnepal<\/a>, and Twitter:<a href=\"https:\/\/twitter.com\/OnlineNoteNepal\">@onlinenotenepal<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Introduction to DBMS Introduction to DBMS gives a concept of management system that controls and manages the database. The database is the collection of related <a class=\"mh-excerpt-more\" href=\"https:\/\/bcisnotes.com\/fourthsemester\/introduction-to-dbms\/\" title=\"Introduction to DBMS || Database Management System || BCIS Notes\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[28,26,27],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Introduction to DBMS || Database Management System || BCIS Notes<\/title>\n<meta name=\"description\" content=\"Introduction to DBMS gives a concept of management system that controls and manages the database. 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