Different Types of Relational DataBase Tables<\/h2>\n
![\"\"](\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/09\/types-of-relationship-in-sql-1.jpg\")
<\/p>\n
One to One Relationship<\/h3>\n\n- This relationship helps to create a relationship between tables where a single row of the first table can only be related to one and only one record of the second row.<\/li>\n
- The same way one record of the second table can be related to one and only one record of the first table.<\/li>\n<\/ul>\n
One to many Relationship<\/h3>\n\n- This helps to create a relationship between the two tables.<\/li>\n
- Any single row of a table can be connected to one or more rows in a second table.<\/li>\n
- Rows from the second table can relate to only one row in the first table. This relationship is known as one to many relationship.<\/li>\n<\/ul>\n
Many to Many Relationship<\/h3>\n\n- Here relationship is created between two tables.<\/li>\n
- Each record in the first table can be related to many records in the second table.<\/li>\n
- Similarly, each record from the second row can relate to any records in the first row.<\/li>\n
- It is represented as N: N.<\/li>\n<\/ul>\n
\n","protected":false},"excerpt":{"rendered":"
Data base collects different types of data that uses tables, record, and columns. For easy storage of data, a well-defined relationship is created between tables and databases. Data in a table is based on a relational model. A unique Id and the key is created for each row. Data attributes are held in the column […]<\/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":[6547],"tags":[18604,18610,18612,18608,18601,18605,18602,18611,18609,18606,18603,18607],"class_list":["post-4856","post","type-post","status-publish","format-standard","hentry","category-sql","tag-database-relationships","tag-one-to-many-relationship-sql","tag-relationship-in-sql","tag-relationship-in-sql-with-example","tag-relationships-in-sql","tag-tables-relations-in-sql-server","tag-types-of-relationship-in-database-table","tag-types-of-relationship-in-database-with-example","tag-types-of-relationships-in-database","tag-what-are-the-3-types-of-relationships-in-a-database","tag-what-are-the-different-types-of-relationships-in-dbms","tag-what-is-relationship-in-sql"],"yoast_head":"\n
What are the different types of relationships in SQL ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the different types of relationships in SQL ? - Data base collects different types of data that uses tables, record, and columns.\" \/>\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\/sql\/what-are-the-different-types-of-relationships-in-sql\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the different types of relationships in SQL ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the different types of relationships in SQL ? - Data base collects different types of data that uses tables, record, and columns.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-27T05:48:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/09\/types-of-relationship-in-sql-1.jpg\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\",\"name\":\"What are the different types of relationships in SQL ? 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One to many Relationship<\/h3>\n\n- This helps to create a relationship between the two tables.<\/li>\n
- Any single row of a table can be connected to one or more rows in a second table.<\/li>\n
- Rows from the second table can relate to only one row in the first table. This relationship is known as one to many relationship.<\/li>\n<\/ul>\n
Many to Many Relationship<\/h3>\n\n- Here relationship is created between two tables.<\/li>\n
- Each record in the first table can be related to many records in the second table.<\/li>\n
- Similarly, each record from the second row can relate to any records in the first row.<\/li>\n
- It is represented as N: N.<\/li>\n<\/ul>\n
\n","protected":false},"excerpt":{"rendered":"
Data base collects different types of data that uses tables, record, and columns. For easy storage of data, a well-defined relationship is created between tables and databases. Data in a table is based on a relational model. A unique Id and the key is created for each row. Data attributes are held in the column […]<\/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":[6547],"tags":[18604,18610,18612,18608,18601,18605,18602,18611,18609,18606,18603,18607],"class_list":["post-4856","post","type-post","status-publish","format-standard","hentry","category-sql","tag-database-relationships","tag-one-to-many-relationship-sql","tag-relationship-in-sql","tag-relationship-in-sql-with-example","tag-relationships-in-sql","tag-tables-relations-in-sql-server","tag-types-of-relationship-in-database-table","tag-types-of-relationship-in-database-with-example","tag-types-of-relationships-in-database","tag-what-are-the-3-types-of-relationships-in-a-database","tag-what-are-the-different-types-of-relationships-in-dbms","tag-what-is-relationship-in-sql"],"yoast_head":"\n
What are the different types of relationships in SQL ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the different types of relationships in SQL ? - Data base collects different types of data that uses tables, record, and columns.\" \/>\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\/sql\/what-are-the-different-types-of-relationships-in-sql\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the different types of relationships in SQL ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the different types of relationships in SQL ? - Data base collects different types of data that uses tables, record, and columns.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-27T05:48:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/09\/types-of-relationship-in-sql-1.jpg\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/sql\/what-are-the-different-types-of-relationships-in-sql\/\",\"name\":\"What are the different types of relationships in SQL ? 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Many to Many Relationship<\/h3>\n\n- Here relationship is created between two tables.<\/li>\n
- Each record in the first table can be related to many records in the second table.<\/li>\n
- Similarly, each record from the second row can relate to any records in the first row.<\/li>\n
- It is represented as N: N.<\/li>\n<\/ul>\n
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