There are 4 data models in DBMS<\/p>\n

<\/p>\n

Relational Data Model\u00a0<\/strong><\/h3>\n

\n
• Edgar F.Codd described the model in 1969.<\/li>\n
• Data are designed using rows and column within a table. So data and in between relationships are represented using these models.<\/li>\n
• In this model tables are called as relations.<\/li>\n
• It is a widely used models for commercial data processing applications.<\/li>\n<\/ul>\n

  <\/p>\n

  Entity-Relationship Data Model<\/strong><\/h3>\n

  \n
  • Data in this model is logically represented asobjects and relationships among them.<\/li>\n
  • Objects in this models are known as entities and relationship among these entities.<\/li>\n
  • Peter Chen designed this relationship model. This relationship model is used in database desigining.<\/li>\n
  • Set of attributes describe entities and set of same type of entities is known as Entity Set and set of the same type of relationship is known as relationship set.<\/li>\n<\/ul>\n

    <\/p>\n

    Object-based Data Model<\/strong><\/h3>\n

    \n
    • Object based model is an extension of ER model with the notions of functions, encapsulations and object identity.<\/li>\n
    • Structure and collection types are supported in this model.<\/li>\n
    • Database systems following the object oriented approach were developed during 1980.<\/li>\n
    • In this model objects are nothing but data carrying its properties.<\/li>\n<\/ul>\n

      <\/p>\n

      Semistructured Data Model<\/strong><\/h3>\n

      \n
      • This model is different from other 3 models.<\/li>\n
      • Data specification is allowed in this model where the individual data items of the same type have different attribute sets.<\/li>\n
      • Semi Structured data is widely used and represented by XML(Extensible Markup Language).<\/li>\n
      • When XML was developed for desiging the mark up information to the text document, it gains importance because of its applcation in the exchange of data.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        There are 4 data models in DBMS Relational Data Model\u00a0 Edgar F.Codd described the model in 1969. Data are designed using rows and column within a table. So data and in between relationships are represented using these models. In this model tables are called as relations. It is a widely used models for commercial data […]<\/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":[17537,17527,17528,17530,17531,17538,17535,17536,17534,17532,17529,17533,17526],"class_list":["post-4465","post","type-post","status-publish","format-standard","hentry","category-dbms","tag-conceptual-data-model-in-dbms","tag-data-models-dbms","tag-data-models-in-dbms","tag-database-models-in-dbms","tag-different-data-models-in-dbms","tag-hierarchical-model-in-dbms","tag-object-based-data-model-in-dbms","tag-semi-structured-data-model-in-dbms","tag-types-of-data-models-in-dbms","tag-what-is-a-data-model-in-dbms","tag-what-is-a-database-model","tag-what-is-data-model","tag-what-is-data-model-in-dbms-and-what-are-its-types"],"yoast_head":"\n