{
  "format": "entitymodeler",
  "format_version": 1,
  "source": "https://entitymodel.com",
  "name": "student_enrollment",
  "title": "Student Enrollment (University)",
  "organization": "EntityModel.com examples",
  "description": "A university: students, programs, courses with prerequisites, course sections taught by instructors in terms, enrollments with grades.",
  "version": "1.0",
  "author": "EntityModel.com",
  "status": "approved",
  "created_at": "2026-11-03T00:00:00.000Z",
  "updated_at": "2026-11-03T00:00:00.000Z",
  "entities": [
    {
      "name": "student",
      "display_name": "Student",
      "entity_type": "standard",
      "color_code": "#3E6A8F",
      "description": "A person admitted to the university.",
      "attributes": [
        {
          "name": "student_id",
          "label": "Student ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "2026014"
        },
        {
          "name": "student_number",
          "label": "Student Number",
          "type": "STRING",
          "required": true,
          "unique": true,
          "pii": true,
          "example": "S2026014"
        },
        {
          "name": "full_name",
          "label": "Full Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "pii": true,
          "example": "Noah Kim"
        },
        {
          "name": "email",
          "label": "Email",
          "type": "STRING",
          "required": true,
          "unique": true,
          "pii": true,
          "example": "noah.kim@uni.example"
        },
        {
          "name": "date_of_birth",
          "label": "Date Of Birth",
          "type": "DATE",
          "pii": true,
          "example": "2007-08-03"
        },
        {
          "name": "program_id",
          "label": "Program ID",
          "type": "INT",
          "required": true,
          "description": "Declared program.",
          "example": "11"
        },
        {
          "name": "enrolled_on",
          "label": "Enrolled On",
          "type": "DATE",
          "required": true,
          "example": "2026-09-01"
        }
      ],
      "struct_types": [],
      "area": "Students"
    },
    {
      "name": "department",
      "display_name": "Department",
      "entity_type": "standard",
      "color_code": "#7A5C8E",
      "description": "An academic department.",
      "attributes": [
        {
          "name": "department_id",
          "label": "Department ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "5"
        },
        {
          "name": "department_name",
          "label": "Department Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "Computer Science"
        },
        {
          "name": "building",
          "label": "Building",
          "type": "STRING",
          "example": "Gates Hall"
        }
      ],
      "struct_types": [],
      "area": "Academics"
    },
    {
      "name": "program",
      "display_name": "Program",
      "entity_type": "standard",
      "color_code": "#1F6366",
      "description": "A degree program, such as BSc Computer Science.",
      "attributes": [
        {
          "name": "program_id",
          "label": "Program ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "11"
        },
        {
          "name": "program_name",
          "label": "Program Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "BSc Computer Science"
        },
        {
          "name": "degree_level_code",
          "label": "Degree Level Code",
          "type": "REFERENCE_ENTITY",
          "reference": {
            "entity": "degree_level",
            "output_attribute": "level_code"
          },
          "required": true,
          "example": "BACH"
        },
        {
          "name": "department_id",
          "label": "Department ID",
          "type": "INT",
          "required": true,
          "example": "5"
        },
        {
          "name": "required_credits",
          "label": "Required Credits",
          "type": "INT",
          "required": true,
          "example": "120"
        }
      ],
      "struct_types": [],
      "area": "Academics"
    },
    {
      "name": "course",
      "display_name": "Course",
      "entity_type": "standard",
      "color_code": "#9A4A10",
      "description": "A course in the catalog. Each term it is offered as one or more sections.",
      "attributes": [
        {
          "name": "course_id",
          "label": "Course ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "210"
        },
        {
          "name": "course_code",
          "label": "Course Code",
          "type": "STRING",
          "required": true,
          "unique": true,
          "example": "CS201"
        },
        {
          "name": "course_title",
          "label": "Course Title",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "Data Structures"
        },
        {
          "name": "credits",
          "label": "Credits",
          "type": "INT",
          "required": true,
          "example": "4"
        },
        {
          "name": "department_id",
          "label": "Department ID",
          "type": "INT",
          "required": true,
          "example": "5"
        }
      ],
      "struct_types": [],
      "area": "Academics"
    },
    {
      "name": "course_prerequisite",
      "display_name": "Prerequisite",
      "entity_type": "standard",
      "color_code": "#4A4D52",
      "description": "A course that must be passed before another.",
      "attributes": [
        {
          "name": "course_id",
          "label": "Course ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "description": "The course with the requirement.",
          "example": "210"
        },
        {
          "name": "prerequisite_course_id",
          "label": "Prerequisite Course ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "description": "The course required first.",
          "example": "101"
        },
        {
          "name": "minimum_grade",
          "label": "Minimum Grade",
          "type": "STRING",
          "is_label": true,
          "example": "C"
        }
      ],
      "struct_types": [],
      "area": "Academics"
    },
    {
      "name": "instructor",
      "display_name": "Instructor",
      "entity_type": "standard",
      "color_code": "#2F5D73",
      "description": "A member of faculty who teaches sections.",
      "attributes": [
        {
          "name": "instructor_id",
          "label": "Instructor ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "77"
        },
        {
          "name": "full_name",
          "label": "Full Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "pii": true,
          "example": "Prof. Elena Rossi"
        },
        {
          "name": "email",
          "label": "Email",
          "type": "STRING",
          "required": true,
          "unique": true,
          "pii": true,
          "example": "e.rossi@uni.example"
        },
        {
          "name": "department_id",
          "label": "Department ID",
          "type": "INT",
          "required": true,
          "example": "5"
        },
        {
          "name": "title",
          "label": "Title",
          "type": "STRING",
          "example": "Associate Professor"
        }
      ],
      "struct_types": [],
      "area": "Academics"
    },
    {
      "name": "term",
      "display_name": "Term",
      "entity_type": "standard",
      "color_code": "#5C7F9E",
      "description": "An academic term.",
      "attributes": [
        {
          "name": "term_id",
          "label": "Term ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "202602"
        },
        {
          "name": "term_name",
          "label": "Term Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "Fall 2026"
        },
        {
          "name": "start_date",
          "label": "Start Date",
          "type": "DATE",
          "required": true,
          "example": "2026-09-01"
        },
        {
          "name": "end_date",
          "label": "End Date",
          "type": "DATE",
          "required": true,
          "example": "2026-12-18"
        }
      ],
      "struct_types": [],
      "area": "Scheduling"
    },
    {
      "name": "course_section",
      "display_name": "Section",
      "entity_type": "standard",
      "color_code": "#A12F18",
      "description": "One offering of a course in a term, taught by an instructor.",
      "attributes": [
        {
          "name": "section_id",
          "label": "Section ID",
          "type": "INT",
          "is_primary_key": true,
          "required": true,
          "example": "9001"
        },
        {
          "name": "course_id",
          "label": "Course ID",
          "type": "INT",
          "required": true,
          "example": "210"
        },
        {
          "name": "term_id",
          "label": "Term ID",
          "type": "INT",
          "required": true,
          "example": "202602"
        },
        {
          "name": "instructor_id",
          "label": "Instructor ID",
          "type": "INT",
          "required": true,
          "example": "77"
        },
        {
          "name": "section_code",
          "label": "Section Code",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "CS201-A"
        },
        {
          "name": "room",
          "label": "Room",
          "type": "STRING",
          "example": "Gates 104"
        },
        {
          "name": "capacity",
          "label": "Capacity",
          "type": "INT",
          "required": true,
          "example": "60"
        }
      ],
      "struct_types": [],
      "area": "Scheduling"
    },
    {
      "name": "enrollment",
      "display_name": "Enrollment",
      "entity_type": "standard",
      "color_code": "#3E6A8F",
      "description": "A student registered in a section, with the final grade.",
      "attributes": [
        {
          "name": "enrollment_id",
          "label": "Enrollment ID",
          "type": "BIGINT",
          "is_primary_key": true,
          "required": true,
          "example": "4500123"
        },
        {
          "name": "student_id",
          "label": "Student ID",
          "type": "INT",
          "required": true,
          "example": "2026014"
        },
        {
          "name": "section_id",
          "label": "Section ID",
          "type": "INT",
          "required": true,
          "example": "9001"
        },
        {
          "name": "enrolled_at",
          "label": "Enrolled At",
          "type": "TIMESTAMP",
          "is_label": true,
          "required": true,
          "example": "2026-08-20T10:00:00Z"
        },
        {
          "name": "grade_code",
          "label": "Grade Code",
          "type": "REFERENCE_ENTITY",
          "reference": {
            "entity": "grade",
            "output_attribute": "grade_code"
          },
          "description": "Empty until graded.",
          "example": "A-"
        },
        {
          "name": "status",
          "label": "Status",
          "type": "STRING",
          "required": true,
          "description": "Enrolled, dropped or completed.",
          "example": "ENROLLED"
        }
      ],
      "struct_types": [],
      "area": "Students"
    },
    {
      "name": "grade",
      "display_name": "Grade",
      "entity_type": "reference",
      "color_code": "#4E7C8C",
      "description": "Letter grades and their grade points.",
      "attributes": [
        {
          "name": "grade_code",
          "label": "Grade Code",
          "type": "STRING",
          "is_primary_key": true,
          "required": true,
          "example": "A-"
        },
        {
          "name": "grade_points",
          "label": "Grade Points",
          "type": "DECIMAL",
          "precision": 12,
          "scale": 2,
          "is_label": true,
          "required": true,
          "example": "3.70"
        }
      ],
      "struct_types": [],
      "reference_values": [
        {
          "grade_code": "A",
          "grade_points": "4.00"
        },
        {
          "grade_code": "A-",
          "grade_points": "3.70"
        },
        {
          "grade_code": "B+",
          "grade_points": "3.30"
        },
        {
          "grade_code": "B",
          "grade_points": "3.00"
        },
        {
          "grade_code": "B-",
          "grade_points": "2.70"
        },
        {
          "grade_code": "C",
          "grade_points": "2.00"
        },
        {
          "grade_code": "D",
          "grade_points": "1.00"
        },
        {
          "grade_code": "F",
          "grade_points": "0.00"
        }
      ],
      "reference_values_source": "Example values"
    },
    {
      "name": "degree_level",
      "display_name": "Degree Level",
      "entity_type": "reference",
      "color_code": "#4E7C8C",
      "description": "Levels of degree.",
      "attributes": [
        {
          "name": "level_code",
          "label": "Level Code",
          "type": "STRING",
          "is_primary_key": true,
          "required": true,
          "example": "BACH"
        },
        {
          "name": "level_name",
          "label": "Level Name",
          "type": "STRING",
          "is_label": true,
          "required": true,
          "example": "Bachelor's"
        }
      ],
      "struct_types": [],
      "reference_values": [
        {
          "level_code": "ASSOC",
          "level_name": "Associate"
        },
        {
          "level_code": "BACH",
          "level_name": "Bachelor's"
        },
        {
          "level_code": "MAST",
          "level_name": "Master's"
        },
        {
          "level_code": "DOCT",
          "level_name": "Doctorate"
        }
      ],
      "reference_values_source": "Example values"
    }
  ],
  "relationships": [
    {
      "name": "studies",
      "source": "student",
      "target": "program",
      "cardinality": "N:1",
      "forward_label": "Studies",
      "reverse_label": "Has Student",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "program_id"
    },
    {
      "name": "offered_by",
      "source": "program",
      "target": "department",
      "cardinality": "N:1",
      "forward_label": "Offered By",
      "reverse_label": "Offers",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "department_id"
    },
    {
      "name": "course_of",
      "source": "course",
      "target": "department",
      "cardinality": "N:1",
      "forward_label": "Taught By",
      "reverse_label": "Teaches",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "department_id"
    },
    {
      "name": "requirement_of",
      "source": "course_prerequisite",
      "target": "course",
      "cardinality": "N:1",
      "forward_label": "Requirement Of",
      "reverse_label": "Requires",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "course_id"
    },
    {
      "name": "required_course",
      "source": "course_prerequisite",
      "target": "course",
      "cardinality": "N:1",
      "forward_label": "Requires Course",
      "reverse_label": "Required For",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "prerequisite_course_id"
    },
    {
      "name": "instructor_in",
      "source": "instructor",
      "target": "department",
      "cardinality": "N:1",
      "forward_label": "Member Of",
      "reverse_label": "Has Faculty",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "department_id"
    },
    {
      "name": "section_of",
      "source": "course_section",
      "target": "course",
      "cardinality": "N:1",
      "forward_label": "Section Of",
      "reverse_label": "Offered As",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "course_id"
    },
    {
      "name": "offered_in",
      "source": "course_section",
      "target": "term",
      "cardinality": "N:1",
      "forward_label": "Offered In",
      "reverse_label": "Schedules",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "term_id"
    },
    {
      "name": "taught_by",
      "source": "course_section",
      "target": "instructor",
      "cardinality": "N:1",
      "forward_label": "Taught By",
      "reverse_label": "Teaches",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "instructor_id"
    },
    {
      "name": "enrolls",
      "source": "enrollment",
      "target": "student",
      "cardinality": "N:1",
      "forward_label": "Enrolls",
      "reverse_label": "Enrolled In",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "student_id"
    },
    {
      "name": "in_section",
      "source": "enrollment",
      "target": "course_section",
      "cardinality": "N:1",
      "forward_label": "In",
      "reverse_label": "Has Enrollment",
      "bidirectional": true,
      "description": "",
      "attributes": [],
      "foreign_key": "section_id"
    }
  ],
  "hierarchies": [],
  "areas": [],
  "notes": []
}