{
  "format": "dataset-manifest/1",
  "slug": "loan-management-sample-database",
  "version": 1,
  "seed": "flagship:loan-management-sample-database:1k",
  "engine": 2,
  "engineVersion": "1.0.0",
  "spec": {
    "format": "dataset/1",
    "engine": 2,
    "slug": "loan-management-sample-database",
    "name": "Loan management sample database",
    "tagline": "Applications, approved loans, instalments, payments and the delinquencies, collections and write-offs that follow.",
    "description": "A consumer lending book: customers apply for loans through branches, officers review and approve them, and every approved loan carries a schedule of monthly instalments, the payments made against it, and fees and penalties along the way. A small share of loans fall behind, go to collections, end up in court or are written off. Every loan starts after its application, every payment after its loan, and every instalment total is its principal plus its interest.",
    "domain": "banking",
    "shape": "transactional",
    "useCases": [
      "sql-practice",
      "bi-dashboards",
      "test-fixtures"
    ],
    "keywords": [
      "loans",
      "lending",
      "repayment schedule",
      "delinquency",
      "sample database"
    ],
    "locale": "en_US",
    "license": "CC0-1.0",
    "version": 1,
    "seed": "flagship:loan-management-sample-database",
    "tables": {
      "active_loans": {
        "description": "Rows for the active_loans table.",
        "rows": 25,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "application_id": {
            "kind": "fk",
            "ref": "loan_applications.id",
            "skew": "long-tail"
          },
          "branch_id": {
            "kind": "fk",
            "ref": "branches.id",
            "skew": "long-tail"
          },
          "customer_id": {
            "kind": "fk",
            "ref": "customers.id",
            "skew": "long-tail"
          },
          "end_date": {
            "kind": "date",
            "after": "start_date",
            "withinDays": 2500
          },
          "interest_rate": {
            "kind": "decimal",
            "min": 3.5,
            "max": 24,
            "scale": 2
          },
          "loan_product_id": {
            "kind": "fk",
            "ref": "loan_products.id",
            "skew": "long-tail"
          },
          "officer_id": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          },
          "principal_amount": {
            "kind": "decimal",
            "min": 1000,
            "max": 400000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "start_date": {
            "kind": "date",
            "after": "application_id.application_date",
            "withinDays": 45
          },
          "status": {
            "kind": "enum",
            "values": [
              "active",
              "closed",
              "defaulted",
              "written_off"
            ],
            "weights": [
              58,
              34,
              5,
              3
            ]
          },
          "term_months": {
            "kind": "int",
            "min": 6,
            "max": 84
          }
        }
      },
      "application_documents": {
        "description": "Rows for the application_documents table.",
        "rows": 80,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "application_id": {
            "kind": "fk",
            "ref": "loan_applications.id",
            "skew": "long-tail"
          },
          "document_type": {
            "kind": "enum",
            "values": [
              "id_card",
              "pay_stub",
              "bank_statement",
              "tax_return",
              "utility_bill",
              "collateral_deed"
            ],
            "weights": [
              22,
              24,
              24,
              12,
              12,
              6
            ]
          },
          "file_name": {
            "kind": "pattern",
            "pattern": "doc-########.pdf"
          },
          "file_path": {
            "kind": "pattern",
            "pattern": "/documents/####/########.pdf"
          },
          "upload_date": {
            "kind": "datetime",
            "after": "application_id.application_date",
            "withinDays": 14,
            "dayProfile": "business"
          },
          "verification_status": {
            "kind": "enum",
            "values": [
              "pending",
              "verified",
              "rejected"
            ],
            "weights": [
              12,
              80,
              8
            ]
          },
          "verified_by": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          }
        }
      },
      "application_reviews": {
        "description": "Rows for the application_reviews table.",
        "rows": 38,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "application_id": {
            "kind": "fk",
            "ref": "loan_applications.id",
            "skew": "long-tail"
          },
          "comments": {
            "kind": "sentence"
          },
          "decision": {
            "kind": "enum",
            "values": [
              "approved",
              "rejected",
              "referred"
            ],
            "weights": [
              66,
              22,
              12
            ]
          },
          "review_date": {
            "kind": "datetime",
            "after": "application_id.application_date",
            "withinDays": 21,
            "dayProfile": "business"
          },
          "reviewer_id": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          }
        }
      },
      "audit_logs": {
        "description": "Rows for the audit_logs table.",
        "rows": 30,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "action_performed": {
            "kind": "enum",
            "values": [
              "insert",
              "update",
              "delete"
            ],
            "weights": [
              38,
              58,
              4
            ]
          },
          "employee_id": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          },
          "new_values": {
            "kind": "enum",
            "values": [
              "approved",
              "closed",
              "paid",
              "overdue",
              "resolved"
            ]
          },
          "old_values": {
            "kind": "enum",
            "values": [
              "pending",
              "active",
              "scheduled",
              "under_review",
              "open"
            ],
            "nullable": true,
            "nullRate": 0.35
          },
          "record_id": {
            "kind": "int",
            "min": 1,
            "max": 100000
          },
          "target_table": {
            "kind": "enum",
            "values": [
              "loan_applications",
              "active_loans",
              "payments",
              "repayment_schedules",
              "customers",
              "collaterals"
            ],
            "weights": [
              24,
              18,
              26,
              18,
              10,
              4
            ]
          },
          "timestamp": {
            "kind": "datetime",
            "from": "2020-01-01",
            "to": "2025-12-31",
            "dayProfile": "business"
          }
        }
      },
      "branch_targets": {
        "description": "Rows for the branch_targets table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "branch_id": {
            "kind": "fk",
            "ref": "branches.id",
            "skew": "long-tail"
          },
          "collection_target": {
            "kind": "decimal",
            "min": 150000,
            "max": 4000000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "disbursement_target": {
            "kind": "decimal",
            "min": 250000,
            "max": 6000000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "target_month": {
            "kind": "int",
            "min": 1,
            "max": 12
          },
          "target_year": {
            "kind": "int",
            "min": 2021,
            "max": 2025
          }
        }
      },
      "branches": {
        "description": "Rows for the branches table.",
        "rows": 25,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "city": {
            "kind": "place.city"
          },
          "code": {
            "kind": "pattern",
            "pattern": "BR-###",
            "unique": true
          },
          "name": {
            "kind": "place.city"
          },
          "phone": {
            "kind": "place.phone"
          },
          "postal_code": {
            "kind": "place.postcode"
          },
          "state": {
            "kind": "place.regionCode"
          }
        }
      },
      "collateral_types": {
        "description": "Rows for the collateral_types table.",
        "rows": 8,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "description": {
            "kind": "sentence"
          },
          "name": {
            "kind": "enum",
            "values": [
              "real_estate",
              "vehicle",
              "equipment",
              "inventory",
              "savings_deposit",
              "securities",
              "gold",
              "receivables"
            ],
            "unique": true
          }
        }
      },
      "collaterals": {
        "description": "Rows for the collaterals table.",
        "rows": 16,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "application_id": {
            "kind": "fk",
            "ref": "loan_applications.id",
            "skew": "long-tail"
          },
          "collateral_type_id": {
            "kind": "fk",
            "ref": "collateral_types.id",
            "skew": "long-tail"
          },
          "description": {
            "kind": "sentence"
          },
          "estimated_value": {
            "kind": "decimal",
            "min": 2000,
            "max": 900000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "valuation_date": {
            "kind": "date",
            "after": "application_id.application_date",
            "withinDays": 30
          },
          "valuer_name": {
            "kind": "person.fullName"
          },
          "verification_status": {
            "kind": "enum",
            "values": [
              "pending",
              "verified",
              "rejected"
            ],
            "weights": [
              10,
              84,
              6
            ]
          }
        }
      },
      "collections": {
        "description": "Rows for the collections table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "collector_id": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          },
          "contact_date": {
            "kind": "datetime",
            "after": "delinquency_id.last_checked_date",
            "withinSeconds": 1209600,
            "dayProfile": "business"
          },
          "contact_method": {
            "kind": "enum",
            "values": [
              "phone",
              "sms",
              "email",
              "letter",
              "field_visit"
            ],
            "weights": [
              44,
              22,
              18,
              10,
              6
            ]
          },
          "delinquency_id": {
            "kind": "fk",
            "ref": "delinquencies.id",
            "skew": "long-tail"
          },
          "outcome_notes": {
            "kind": "sentence"
          },
          "promise_amount": {
            "kind": "decimal",
            "min": 50,
            "max": 5000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "promise_to_pay_date": {
            "kind": "date",
            "after": "contact_date",
            "withinDays": 30
          }
        }
      },
      "credit_scores": {
        "description": "Rows for the credit_scores table.",
        "rows": 30,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "customer_id": {
            "kind": "fk",
            "ref": "customers.id",
            "skew": "long-tail"
          },
          "evaluation_date": {
            "kind": "date",
            "from": "2019-06-01",
            "to": "2023-12-31"
          },
          "provider": {
            "kind": "enum",
            "values": [
              "bureau_north",
              "bureau_central",
              "bureau_coastal"
            ]
          },
          "risk_rating": {
            "kind": "enum",
            "values": [
              "low",
              "medium",
              "high",
              "very_high"
            ],
            "weights": [
              38,
              37,
              18,
              7
            ]
          },
          "score": {
            "kind": "int",
            "min": 300,
            "max": 850,
            "distribution": "normal"
          }
        }
      },
      "customer_references": {
        "description": "Rows for the customer_references table.",
        "rows": 19,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "customer_id": {
            "kind": "fk",
            "ref": "customers.id",
            "skew": "long-tail"
          },
          "email": {
            "kind": "internet.email"
          },
          "full_name": {
            "kind": "person.fullName"
          },
          "phone": {
            "kind": "phone.number"
          },
          "relationship": {
            "kind": "enum",
            "values": [
              "family",
              "friend",
              "employer",
              "colleague",
              "landlord"
            ],
            "weights": [
              40,
              30,
              12,
              12,
              6
            ]
          }
        }
      },
      "customers": {
        "description": "Rows for the customers table.",
        "rows": 22,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "address": {
            "kind": "location.streetAddress"
          },
          "city": {
            "kind": "place.city"
          },
          "date_of_birth": {
            "kind": "date",
            "from": "1950-01-01",
            "to": "2004-12-31"
          },
          "email": {
            "kind": "internet.email",
            "from": {
              "firstName": "first_name",
              "lastName": "last_name"
            }
          },
          "employment_status": {
            "kind": "enum",
            "values": [
              "employed",
              "self_employed",
              "retired",
              "unemployed",
              "student"
            ],
            "weights": [
              68,
              14,
              10,
              5,
              3
            ]
          },
          "first_name": {
            "kind": "person.firstName"
          },
          "last_name": {
            "kind": "person.lastName"
          },
          "monthly_income": {
            "kind": "decimal",
            "min": 900,
            "max": 40000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "national_id": {
            "kind": "pattern",
            "pattern": "CUS-########",
            "unique": true
          },
          "phone": {
            "kind": "phone.number"
          },
          "postal_code": {
            "kind": "place.postcode"
          },
          "state": {
            "kind": "place.regionCode"
          }
        }
      },
      "delinquencies": {
        "description": "Rows for the delinquencies table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "days_past_due": {
            "kind": "int",
            "min": 1,
            "max": 365,
            "distribution": "long-tail"
          },
          "last_checked_date": {
            "kind": "datetime",
            "after": "loan_id.start_date",
            "withinDays": 700
          },
          "loan_id": {
            "kind": "fk",
            "ref": "active_loans.id",
            "skew": "long-tail"
          },
          "overdue_interest": {
            "kind": "decimal",
            "min": 1,
            "max": 9000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "overdue_principal": {
            "kind": "decimal",
            "min": 20,
            "max": 60000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "status": {
            "kind": "enum",
            "values": [
              "open",
              "in_collection",
              "legal",
              "resolved"
            ],
            "weights": [
              32,
              30,
              6,
              32
            ]
          }
        }
      },
      "departments": {
        "description": "Rows for the departments table.",
        "rows": 8,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "code": {
            "kind": "pattern",
            "pattern": "DPT-##",
            "unique": true
          },
          "cost_center": {
            "kind": "pattern",
            "pattern": "CC-####"
          },
          "name": {
            "kind": "enum",
            "values": [
              "lending",
              "underwriting",
              "collections",
              "operations",
              "compliance",
              "customer_service",
              "finance",
              "legal"
            ],
            "unique": true
          }
        }
      },
      "disbursements": {
        "description": "Rows for the disbursements table.",
        "rows": 25,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "account_number": {
            "kind": "pattern",
            "pattern": "##########"
          },
          "amount": {
            "kind": "decimal",
            "min": 1000,
            "max": 400000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "approved_by": {
            "kind": "fk",
            "ref": "employees.id",
            "skew": "long-tail"
          },
          "bank_name": {
            "kind": "company.name"
          },
          "disbursement_date": {
            "kind": "date",
            "after": "loan_id.start_date",
            "withinDays": 7
          },
          "loan_id": {
            "kind": "fk",
            "ref": "active_loans.id",
            "skew": "long-tail"
          },
          "transaction_reference": {
            "kind": "pattern",
            "pattern": "DSB-##########",
            "unique": true
          }
        }
      },
      "employees": {
        "description": "Rows for the employees table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "branch_id": {
            "kind": "fk",
            "ref": "branches.id",
            "skew": "long-tail"
          },
          "department_id": {
            "kind": "fk",
            "ref": "departments.id",
            "skew": "long-tail"
          },
          "email": {
            "kind": "internet.email",
            "from": {
              "firstName": "first_name",
              "lastName": "last_name"
            }
          },
          "first_name": {
            "kind": "person.firstName"
          },
          "hire_date": {
            "kind": "date",
            "from": "2008-01-01",
            "to": "2023-12-31"
          },
          "job_title": {
            "kind": "enum",
            "values": [
              "loan_officer",
              "credit_analyst",
              "underwriter",
              "collector",
              "branch_manager",
              "teller"
            ],
            "weights": [
              30,
              15,
              12,
              18,
              5,
              20
            ]
          },
          "last_name": {
            "kind": "person.lastName"
          },
          "phone": {
            "kind": "phone.number"
          }
        }
      },
      "fee_types": {
        "description": "Rows for the fee_types table.",
        "rows": 8,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "amount_type": {
            "kind": "enum",
            "values": [
              "fixed",
              "percent"
            ],
            "weights": [
              70,
              30
            ]
          },
          "code": {
            "kind": "pattern",
            "pattern": "FEE-##",
            "unique": true
          },
          "name": {
            "kind": "enum",
            "values": [
              "origination",
              "late_payment",
              "processing",
              "prepayment",
              "documentation",
              "insurance",
              "valuation",
              "legal"
            ],
            "unique": true
          },
          "rate_or_value": {
            "kind": "decimal",
            "min": 0.5,
            "max": 250,
            "scale": 2
          }
        }
      },
      "guarantors": {
        "description": "Rows for the guarantors table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "annual_income": {
            "kind": "decimal",
            "min": 18000,
            "max": 450000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "application_id": {
            "kind": "fk",
            "ref": "loan_applications.id",
            "skew": "long-tail"
          },
          "email": {
            "kind": "internet.email",
            "from": {
              "firstName": "first_name",
              "lastName": "last_name"
            }
          },
          "first_name": {
            "kind": "person.firstName"
          },
          "last_name": {
            "kind": "person.lastName"
          },
          "national_id": {
            "kind": "pattern",
            "pattern": "[GUA]-########",
            "unique": true
          },
          "phone": {
            "kind": "phone.number"
          },
          "relationship": {
            "kind": "enum",
            "values": [
              "spouse",
              "parent",
              "sibling",
              "friend",
              "business_partner"
            ],
            "weights": [
              34,
              28,
              16,
              12,
              10
            ]
          }
        }
      },
      "insurance_policies": {
        "description": "Rows for the insurance_policies table.",
        "rows": 13,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "coverage_amount": {
            "kind": "decimal",
            "min": 1000,
            "max": 400000,
            "scale": 2,
            "distribution": "long-tail"
          },
          "end_date": {
            "kind": "date",
            "after": "start_date",
            "withinDays": 2500
          },
          "loan_id": {
            "kind": "fk",
            "ref": "active_loans.id",
            "skew": "long-tail"
          },
          "policy_number": {
            "kind": "pattern",
            "pattern": "POL-##########",
            "unique": true
          },
          "premium_amount": {
            "kind": "decimal",
            "min": 40,
            "max": 2500,
            "scale": 2,
            "distribution": "long-tail"
          },
          "provider_name": {
            "kind": "company.name"
          },
          "start_date": {
            "kind": "date",
            "after": "loan_id.start_date",
            "withinDays": 30
          }
        }
      },
      "legal_actions": {
        "description": "Rows for the legal_actions table.",
        "rows": 10,
        "columns": {
          "id": {
            "kind": "pk"
          },
          "action_type": {
            "kind": "enum",
            "values": [
              "demand_letter",
              "lawsuit",
              "judgment",
              "settlement",
              "repossession"
            ],
            "weights": [
              40,
              25,
              12,
              15,
              8
            ]
          },
          "case_number": {
            "kind": "pattern",
            "pattern": "CV-####-######",
            "unique": true
          },
          "court_name": {
            "kind": "enum",
            "values": [
              "Circuit Court",
              "District Court",
              "County Court",
              "Superior Court",
              "Small Claims Court"
            ],
            "weights": [
              30,
              25,
              20,
              10,
              15
            ]
          },
          "current_status": {
            "kind": "enum",
            "values": [
              "filed",
              "in_progress",
              "judgment_entered",
              "settled",
              "dismissed"
            ],
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        "notes": [
          "At this size the tables beside payment_allocations were cut to 1/16 of it, so the whole build stays under 3,000,000 rows."
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              "engine": "MySQL",
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            "name": "Each loan product, fee type and payment method appears once",
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      },
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        "name": "Every payment is made on or after its loan started",
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      },
      {
        "name": "Every instalment total is its principal plus its interest",
        "sql": "SELECT count(*) AS violations FROM repayment_schedules WHERE total_due <> principal_due + interest_due"
      },
      {
        "name": "A reschedule is approved on or after it is requested",
        "sql": "SELECT count(*) AS violations FROM loan_reschedules WHERE approval_date < request_date"
      },
      {
        "name": "Interest rates are between 3.5% and 24%",
        "sql": "SELECT count(*) AS violations FROM active_loans WHERE interest_rate NOT BETWEEN 3.5 AND 24"
      },
      {
        "name": "Each loan product, fee type and payment method appears once",
        "sql": "SELECT (SELECT count(*) - count(DISTINCT name) FROM loan_products) + (SELECT count(*) - count(DISTINCT name) FROM fee_types) + (SELECT count(*) - count(DISTINCT name) FROM payment_methods) AS violations"
      }
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  },
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  "updatedAt": 1791305176029
}