[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-655995-105":59,"doc-detail-655995-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","lecture-notes-database-design-and-er-model","Lecture Notes - Database Design and ER Model","","This document provides a comprehensive guide to database design, focusing on the Entity-Relationship (ER) model and its practical application. It details the essential phases of database development, moving from conceptual design and requirements specification through logical schema construction to physical implementation. The content covers key methodologies for identifying entities, attributes, and relationships, as well as establishing cardinality and participation constraints. Additionally, the material includes detailed visual examples of ER diagrams and demonstrates the transformation process from conceptual models to well-structured relational schemas, serving as a vital resource for understanding information systems analysis and design.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/lecture-notes-database-design-and-er-model/655995/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/lecture-notes-database-design-and-er-model/655995.png","ImageObject",300,407,{"name":92,"@type":93},"Bintang","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-28","2026-10-25",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the three main phases of database design described in the document?","Question",{"text":112,"@type":113},"The three phases are Conceptual Design (creating the ER diagram), Logical Design (creating the relational schema), and Physical Design (describing the implementation details like system catalogs and indexes).","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is a Data Model defined in this context?",{"text":117,"@type":113},"A data model is a collection of objects and structures used to represent, store, and manage data required for business operations.",{"name":119,"@type":110,"acceptedAnswer":120},"What is the primary goal of the ER model in database design?",{"text":121,"@type":113},"The ER model acts as a high-level conceptual tool to represent reality, allowing designers to identify entities, their attributes, and the relationships between them before moving to logical schema implementation.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},655995,1793072418,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},962085564381,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Design of ER Model in ER Diagram  \nDr . Sunnie S. Chung CIS430/530  \nLearning Objectives  \n􀀹 Design E-R (Entity Relationship) Model  \n􀀹 How to Identify an Entity  \n􀀹 How to Identify Attribute Types  \n􀀹 How to Identity a Relationship between two Entities  \n􀀹 How to Identify Cardinality and Participation of Each Relationship  \n􀀹 Discuss the role of designing databases in the analysis and design of an information system  \n􀀹 Learn how to transform an entity-relationship (ER) Diagram into an Equivalent Set of Well-structured Relations  \n9.2  \nPhases of Database Design 4  \nData Requirements  \nSpecification of requirements and results  \nConceptual Design  \nConceptual Schema  \nLogical Design  \nLogical Schema  \nPhysical Design  \n􀀀 Conceptual design begins with the collection of requirements and results needed for the database (ER Diagram)  \n􀀀 Logical schema is a description of the structure of the database (Relational Scheme)  \n􀀀 Physical schema is a description of the implementation (dictionaries, system catalogs, table files, indexes, programs  \nModels  \nA Data Model is a collection of objects inefficient Structures that can be used to  \n5  \nrepresent a set of data and operations to Store and Manage the data for Business Operations  \n• Conceptual Models are tools for representing reality at a very high-level of abstraction (ER Model in E-R Diagram)  \n• Logical Models are data descriptions that can be processed by computers (Database Scheme by DDL  \nExample of E-R Model 6 • Every employee works in at least one project • Every project has employees working on it  \n\n| EMPLOYEESSN Name Salary | \u003Cbr>WORKS_ON\u003Cbr>N N | PROJECT Name Code |\n| --- | --- | --- |\n\n9.7  \n9.9  \n9  \nDesign of ER (Entity-Relationship) Model  \n• Identify All the Entities  \n• Identify a Common Set of Attributes for Each Entity  \n• Identify All the Relationships between Any Two Entities","cbCaivzsa0LCF29p","https://ap.wps.com/l/cbCaivzsa0LCF29p","pdf",2759705,66,"English","# Database Design Phases\n## Conceptual, Logical, and Physical Schema\n# Designing the ER Model\n## Identifying Entities and Attributes\n## Cardinality and Relationships\n# Transformation to Relations\n## ER Diagram to Relational Scheme","[{\"question\":\"What are the three main phases of database design described in the document?\",\"answer\":\"The three phases are Conceptual Design (creating the ER diagram), Logical Design (creating the relational schema), and Physical Design (describing the implementation details like system catalogs and indexes).\"},{\"question\":\"How is a Data Model defined in this context?\",\"answer\":\"A data model is a collection of objects and structures used to represent, store, and manage data required for business operations.\"},{\"question\":\"What is the primary goal of the ER model in database design?\",\"answer\":\"The ER model acts as a high-level conceptual tool to represent reality, allowing designers to identify entities, their attributes, and the relationships between them before moving to logical schema implementation.\"}]","Lecture Notes - Database Design and ER Model | PDF",1792965449,166]