![\"\"](\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/10\/hierarchical-model-in-dbms.jpg\")
<\/h2>\nFeatures of Hierarchical Model<\/strong><\/h2>\n\n- This model is based on the tree structure.<\/li>\n
- This model contains a collection of records that are connected by each other by links.<\/li>\n
- Tree structures that are used in these models are called as routed trees.<\/li>\n
- The empty node of a tree is its root node.<\/li>\n
- The hierarchical model is a collection of routed trees and the relationship that exists in the hierarchical model is one to many and one to one.<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/10\/hierarchical-model-dbms.png\")
<\/p>\n
Advantages<\/strong><\/h2>\n\n- It is easy to understand.<\/li>\n
- More efficient than the ER model.<\/li>\n<\/ul>\n
Disadvantages<\/strong><\/h2>\n\n- When a parent node is deleted, child node will also be deleted because of data inconsistency occurs.<\/li>\n
- Stroage space is also wasted.<\/li>\n
- Very complex to design.<\/li>\n
- Structural Independence is not present.<\/li>\n<\/ul>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Features of Hierarchical Model This model is based on the tree structure. This model contains a collection of records that are connected by each other by links. Tree structures that are used in these models are called as routed trees. The empty node of a tree is its root node. The hierarchical model is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[7157],"tags":[18949,7238,7235,7248,17538,18948,18947,18946,18945],"class_list":["post-5013","post","type-post","status-publish","format-standard","hentry","category-dbms","tag-advantages-of-hierarchical-model-in-dbms","tag-hierarchical-data-structure","tag-hierarchical-database-model","tag-hierarchical-model-example","tag-hierarchical-model-in-dbms","tag-hierarchical-model-in-dbms-advantages","tag-hierarchical-model-with-examples","tag-what-is-a-hierarchical-database","tag-what-is-hierarchical-model-in-dbms"],"yoast_head":"\n
What is Hierarchical model in DBMS ? - Hierarchical Data Model<\/title>\n<meta name=\"description\" content=\"What is Hierarchical model in DBMS ? - This model is based on tree structure. This model contains collection of records that are connected by each other by links.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/dbms\/what-is-hierarchical-model-in-dbms\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Hierarchical model in DBMS ? - Hierarchical Data Model\" \/>\n<meta property=\"og:description\" content=\"What is Hierarchical model in DBMS ? - This model is based on tree structure. 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<\/p>\n
Advantages<\/strong><\/h2>\n\n- It is easy to understand.<\/li>\n
- More efficient than the ER model.<\/li>\n<\/ul>\n
Disadvantages<\/strong><\/h2>\n\n- When a parent node is deleted, child node will also be deleted because of data inconsistency occurs.<\/li>\n
- Stroage space is also wasted.<\/li>\n
- Very complex to design.<\/li>\n
- Structural Independence is not present.<\/li>\n<\/ul>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Features of Hierarchical Model This model is based on the tree structure. This model contains a collection of records that are connected by each other by links. Tree structures that are used in these models are called as routed trees. The empty node of a tree is its root node. The hierarchical model is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[7157],"tags":[18949,7238,7235,7248,17538,18948,18947,18946,18945],"class_list":["post-5013","post","type-post","status-publish","format-standard","hentry","category-dbms","tag-advantages-of-hierarchical-model-in-dbms","tag-hierarchical-data-structure","tag-hierarchical-database-model","tag-hierarchical-model-example","tag-hierarchical-model-in-dbms","tag-hierarchical-model-in-dbms-advantages","tag-hierarchical-model-with-examples","tag-what-is-a-hierarchical-database","tag-what-is-hierarchical-model-in-dbms"],"yoast_head":"\n
What is Hierarchical model in DBMS ? - Hierarchical Data Model<\/title>\n<meta name=\"description\" content=\"What is Hierarchical model in DBMS ? - This model is based on tree structure. This model contains collection of records that are connected by each other by links.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/dbms\/what-is-hierarchical-model-in-dbms\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Hierarchical model in DBMS ? - Hierarchical Data Model\" \/>\n<meta property=\"og:description\" content=\"What is Hierarchical model in DBMS ? - This model is based on tree structure. 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Disadvantages<\/strong><\/h2>\n\n- When a parent node is deleted, child node will also be deleted because of data inconsistency occurs.<\/li>\n
- Stroage space is also wasted.<\/li>\n
- Very complex to design.<\/li>\n
- Structural Independence is not present.<\/li>\n<\/ul>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Features of Hierarchical Model This model is based on the tree structure. This model contains a collection of records that are connected by each other by links. Tree structures that are used in these models are called as routed trees. The empty node of a tree is its root node. The hierarchical model is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[7157],"tags":[18949,7238,7235,7248,17538,18948,18947,18946,18945],"class_list":["post-5013","post","type-post","status-publish","format-standard","hentry","category-dbms","tag-advantages-of-hierarchical-model-in-dbms","tag-hierarchical-data-structure","tag-hierarchical-database-model","tag-hierarchical-model-example","tag-hierarchical-model-in-dbms","tag-hierarchical-model-in-dbms-advantages","tag-hierarchical-model-with-examples","tag-what-is-a-hierarchical-database","tag-what-is-hierarchical-model-in-dbms"],"yoast_head":"\n
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<\/p>\n","protected":false},"excerpt":{"rendered":"
Features of Hierarchical Model This model is based on the tree structure. This model contains a collection of records that are connected by each other by links. Tree structures that are used in these models are called as routed trees. The empty node of a tree is its root node. The hierarchical model is a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[7157],"tags":[18949,7238,7235,7248,17538,18948,18947,18946,18945],"class_list":["post-5013","post","type-post","status-publish","format-standard","hentry","category-dbms","tag-advantages-of-hierarchical-model-in-dbms","tag-hierarchical-data-structure","tag-hierarchical-database-model","tag-hierarchical-model-example","tag-hierarchical-model-in-dbms","tag-hierarchical-model-in-dbms-advantages","tag-hierarchical-model-with-examples","tag-what-is-a-hierarchical-database","tag-what-is-hierarchical-model-in-dbms"],"yoast_head":"\n