{"id":18727478,"url":"https://github.com/sebastian-huynh/erwin-data-models","last_synced_at":"2026-01-26T04:33:36.881Z","repository":{"id":212375323,"uuid":"704423151","full_name":"sebastian-huynh/erwin-data-models","owner":"sebastian-huynh","description":"Demonstrating relational integrity between entities through visual modeling.","archived":false,"fork":false,"pushed_at":"2023-12-27T03:46:12.000Z","size":3524,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-05-19T20:12:41.876Z","etag":null,"topics":["data-model","data-science","data-structures","erwin-data-modeler","mapping"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/sebastian-huynh.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2023-10-13T08:19:40.000Z","updated_at":"2023-12-21T08:22:49.000Z","dependencies_parsed_at":"2023-12-27T04:51:52.208Z","dependency_job_id":null,"html_url":"https://github.com/sebastian-huynh/erwin-data-models","commit_stats":null,"previous_names":["sebastian-huynh/erwin-data-models"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/sebastian-huynh/erwin-data-models","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sebastian-huynh%2Ferwin-data-models","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sebastian-huynh%2Ferwin-data-models/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sebastian-huynh%2Ferwin-data-models/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sebastian-huynh%2Ferwin-data-models/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/sebastian-huynh","download_url":"https://codeload.github.com/sebastian-huynh/erwin-data-models/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sebastian-huynh%2Ferwin-data-models/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28766886,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-26T03:54:34.369Z","status":"ssl_error","status_checked_at":"2026-01-26T03:54:33.031Z","response_time":59,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["data-model","data-science","data-structures","erwin-data-modeler","mapping"],"created_at":"2024-11-07T14:17:48.848Z","updated_at":"2026-01-26T04:33:36.866Z","avatar_url":"https://github.com/sebastian-huynh.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# Data Modeling Using Erwin Software\nThis was a project I had done for a database design and development class. \u003cbr\u003e\nScreenshots of my work are provided according to the requirements. \u003cbr\u003e \n(_As I am using the academic edition of Erwin, it does not allow for direct source file connection to Github._) \u003cbr\u003e\u003cbr\u003e\n**Project Instructions:** [View Here](/CIS3050-Project1_Fall_2023.pdf) \u003cbr\u003e\n**Project Reflection and Explanation of Functional Dependencies:** [View Here](https://github.com/sebastian-huynh/erwin-data-models/blob/9fb5132bcc191d736eebcc0142521b0424a3f917/EERD%20Functional%20Dependency%20Report.pdf) \u003cbr\u003e\n**Erwin Software Info:** [View Here](https://www.erwin.com/products/erwin-data-modeler/) \u003cbr\u003e\u003cbr\u003e\n![Conceptual Model Image](https://github.com/sebastian-huynh/erwin-data-models/blob/239b3938574ee3e6e945bee849fc88ee2e896283/ERD%20conceptual%20view.png) \u003cbr\u003e\n**Conceptual level** of the entity relationship diagram displays the four independent, strong entities (_Department, Supervisor, Employee, and Project_). It also displays the bridging, associative entities between them (_Department_Employee, Supervisor_Employee, and Project_Assignment_) that are required to facilitate the many-to-many cardinalities. There is also the parent-child entity relationship seen between \"Project\" and \"Task\". \u003cbr\u003e\u003cbr\u003e\n![Logical Model Image](https://github.com/sebastian-huynh/erwin-data-models/blob/f51331a09ecd8196e35947fd267548b855da5bef/ERD%20logical%20view.png) \u003cbr\u003e\n**Logical level** of the entity relationship diagram expands on the conceptual and shows the attributes of each entity and identifies which function as the primary or foreign keys. \u003cbr\u003e\u003cbr\u003e\n![Physical Model Image](https://github.com/sebastian-huynh/erwin-data-models/blob/2403286b522ac199cc9beb2ddc75f63cc18113ba/ERD%20physical%20view.png) \u003cbr\u003e\n**Physical level** of the entity relationship diagram expands on the logical and shows the formatted datatypes for each attribute compatible with MS Sql Server. \u003cbr\u003e\u003cbr\u003e\n![Physical EERD Model Image](https://github.com/sebastian-huynh/erwin-data-models/blob/2403286b522ac199cc9beb2ddc75f63cc18113ba/EERD%20data%20model.png) \u003cbr\u003e\n**Physical EXTENDED Entity Relationship Diagram Level** extends the original ERD by showing super-subtype entities. In this case, department and employee are the supertypes and the subtypes inherit their attributes and are disjointed (_meaning an instance may not be part of two subtypes simultaneously_).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsebastian-huynh%2Ferwin-data-models","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsebastian-huynh%2Ferwin-data-models","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsebastian-huynh%2Ferwin-data-models/lists"}