{"id":3365,"date":"2023-02-27T20:11:25","date_gmt":"2023-02-28T01:11:25","guid":{"rendered":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/?p=3365"},"modified":"2023-02-27T20:11:25","modified_gmt":"2023-02-28T01:11:25","slug":"what-is-an-erd-2a","status":"publish","type":"post","link":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/2023\/02\/27\/what-is-an-erd-2a\/","title":{"rendered":"What is an ERD? 2a"},"content":{"rendered":"

\"Entity<\/p>\n

ERD, also known as Entity Relationship Diagram, is a visual representation of different data to describe how they are related. The two notions for ERD are Chen\u2019s and Crow\u2019s. Chen uses rectangles and diamonds to show a relationship, and Crow uses rectangles to connect to another rectangle to show a relationship. There are three primary symbols for ERD: entity, attribute, and relationship. The entity uses nouns, Attribute uses adjectives or characteristics, and relationships use verbs. The three crow\u2019s foot notation is 1:1, which is a \u201cone-to-one relationship,\u201d 1:m is \u201cone to many,\u201d is to many relationships, and last is m:m, a \u201cmany-to-many relationship\u201d this help describe the characteristic of the relationship between two entities. I think the key thing of an ERD table is to label if you don\u2019t label your boxes and lines, you might end up lost. Or make sure you\u2019re using the right Chen\u2019s or crowfoot notion for your ERD table.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

ERD, also known as Entity Relationship Diagram, is a visual representation of different data to describe how they are related. The two notions for ERD are Chen\u2019s and Crow\u2019s. Chen uses rectangles and diamonds to show a relationship, and Crow uses rectangles to connect to another rectangle to show a relationship. There are three primary […]<\/p>\n","protected":false},"author":29271,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[10531],"tags":[],"class_list":{"0":"post-3365","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-student-post","7":"entry"},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/posts\/3365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/users\/29271"}],"replies":[{"embeddable":true,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/comments?post=3365"}],"version-history":[{"count":1,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/posts\/3365\/revisions"}],"predecessor-version":[{"id":3366,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/posts\/3365\/revisions\/3366"}],"wp:attachment":[{"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/media?parent=3365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/categories?post=3365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/community.mis.temple.edu\/mis2101sec730spring2023\/wp-json\/wp\/v2\/tags?post=3365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}