Iteration 1 - DATA_ENGINEER
Sequence: 2
Timestamp: 2025-07-25 22:31:07

Prompt:
You are a senior database architect implementing schema modifications for iteration 1. Based on the OR expert's optimization requirements and mapping analysis, you will design and implement the complete database architecture following industry best practices.

YOUR RESPONSIBILITIES:
- Analyze OR expert's mapping evaluations and missing requirements
- Design schema adjustments following database normalization principles
- Implement complete data dictionary with business-oriented descriptions
- Manage business configuration logic parameters (scalar values and formulas not suitable for tables)
- Maintain business realism by preserving relevant non-optimization tables
- Follow industry database design standards and naming conventions
- Ensure each table will store between 3 and 10 data rows for realistic optimization scenarios
- Apply the 3-row minimum rule - if optimization information is insufficient to generate at least 3 meaningful rows for a table, move that information to business_configuration_logic.json instead.


BUSINESS CONFIGURATION LOGIC DESIGN:
- Create business_configuration_logic.json for business parameters
- For scalar parameters: Use "sample_value" as templates for triple expert
- For business logic formulas: Use actual formula expressions (not "sample_value")
- Support different configuration_types:
  - "scalar_parameter": Single business values with "sample_value" (resources, limits, thresholds)
  - "business_logic_formula": Actual calculation formulas using real expressions
  - "business_metric": Performance evaluation metrics with "sample_value"
- Triple expert will later provide realistic values for scalar parameters only
- Formulas should be actual business logic expressions, not sample values


CRITICAL: Respond with ONLY a valid JSON object. No explanations, no markdown, no extra text.

OR EXPERT ANALYSIS (iteration 1):
{
  "database_id": "dorm_1",
  "iteration": 0,
  "business_context": "Optimize dormitory assignments to minimize the total distance students travel from their home cities to their assigned dorms, while respecting dorm capacity and gender constraints.",
  "optimization_problem_description": "The goal is to assign students to dorms in a way that minimizes the total distance traveled from their home cities to their assigned dorms. The assignment must respect the capacity of each dorm and ensure that students are assigned to dorms that match their gender.",
  "optimization_formulation": {
    "objective": "minimize \u2211(distance[stuid, dormid] * assign[stuid, dormid])",
    "decision_variables": "assign[stuid, dormid] (binary: 1 if student stuid is assigned to dorm dormid, 0 otherwise)",
    "constraints": [
      "\u2211(assign[stuid, dormid] for all stuid) \u2264 student_capacity[dormid] for all dormid",
      "\u2211(assign[stuid, dormid] for all dormid) = 1 for all stuid",
      "assign[stuid, dormid] = 0 if gender[stuid] \u2260 gender[dormid] for all stuid, dormid"
    ]
  },
  "current_optimization_to_schema_mapping": {
    "objective_coefficients": {
      "distance[stuid, dormid]": {
        "currently_mapped_to": "missing",
        "mapping_adequacy": "missing",
        "description": "Distance from student's home city to dorm"
      }
    },
    "constraint_bounds": {
      "student_capacity[dormid]": {
        "currently_mapped_to": "Dorm.student_capacity",
        "mapping_adequacy": "good",
        "description": "Maximum number of students a dorm can accommodate"
      }
    },
    "decision_variables": {
      "assign[stuid, dormid]": {
        "currently_mapped_to": "missing",
        "mapping_adequacy": "missing",
        "description": "Binary variable indicating if a student is assigned to a dorm",
        "variable_type": "binary"
      }
    }
  },
  "missing_optimization_requirements": [
    "Distance matrix between student home cities and dorms",
    "Gender information for students and dorms"
  ],
  "iteration_status": {
    "complete": false,
    "confidence": "medium",
    "next_focus": "Obtain distance data and ensure gender information is available for both students and dorms."
  }
}





TASK: Implement comprehensive schema changes and configuration logic management based on OR expert's requirements.

JSON STRUCTURE REQUIRED:

{
  "database_id": "dorm_1",
  "iteration": 1,
  "implementation_summary": "Summary of schema changes and configuration logic updates based on OR expert mapping analysis",
  
  "or_requirements_analysis": {
    "mapping_gaps_identified": [
      "List specific gaps identified from OR expert's mapping_adequacy assessments"
    ],
    "missing_data_requirements": [
      "List missing optimization data requirements from OR expert"
    ],
    "business_configuration_logic_needs": [
      "Scalar parameters and formulas better suited for configuration than tables"
    ]
  },
  
  "schema_adjustment_decisions": {
    "tables_to_delete": [
      {
        "table_name": "table_name",
        "reason": "business justification for removal (optimization irrelevant vs business irrelevant)"
      }
    ],
    "tables_to_create": [
      {
        "table_name": "table_name", 
        "purpose": "optimization role (decision_variables/objective_coefficients/constraint_bounds/business_data)",
        "business_meaning": "what this table represents in business context"
      }
    ],
    "tables_to_modify": [
      {
        "table_name": "existing_table",
        "changes": "specific modifications needed",
        "reason": "why these changes address OR expert's mapping gaps"
      }
    ]
  },
  
  "business_configuration_logic_updates": {
    "configuration_parameters": {
      "parameter_name": {
        "sample_value": "sample_parameter_value",
        "data_type": "INTEGER/FLOAT/STRING/BOOLEAN",
        "business_meaning": "what this parameter represents in business context",
        "optimization_role": "how this parameter is used in optimization model",
        "configuration_type": "scalar_parameter"
      },
      "formula_name": {
        "formula_expression": "actual_business_formula_expression",
        "data_type": "STRING",
        "business_meaning": "what this formula represents in business context",
        "optimization_role": "how this formula is used in optimization model",
        "configuration_type": "business_logic_formula"
      }
    },
    "updates_rationale": "why these parameters are better in configuration logic than tables"
  },
  
  "implemented_optimization_mapping": {
    "objective_coefficients_mapping": {
      "coefficient_name[indices]": "table.column OR business_configuration_logic.key - complete mapping path"
    },
    "constraint_bounds_mapping": {
      "constraint_name[indices]": "table.column OR business_configuration_logic.key - complete mapping path"  
    },
    "decision_variables_mapping": {
      "variable_name[indices]": "table.column OR business_configuration_logic.key - complete mapping path"
    }
  },
  
  "data_dictionary": {
    "tables": {
      "table_name": {
        "business_purpose": "business meaning of this table for linear optimization",
        "optimization_role": "decision_variables/objective_coefficients/constraint_bounds/business_data",
        "columns": {
          "column_name": {
            "data_type": "TYPE",
            "business_meaning": "what this column represents in business context for linear optimization",
            "optimization_purpose": "how this column is used in linear optimization formulation",
            "sample_values": "example values or range"
          }
        }
      }
    }
  },
  
  "data_mapping": {
    "objective_sources": ["table.column pairs for linear objective function"],
    "constraint_sources": ["table.column pairs for linear constraints"],
    "sample_data_rows": {"table1": 3, "table2": 5}
  },
  
  "validation": {
    "schema_complete": true,
    "data_consistent": true,
    "math_traceable": true,
    "business_aligned": true,
    "follows_db_standards": true
  }
}

Response:
{
  "database_id": "dorm_1",
  "iteration": 1,
  "implementation_summary": "Schema changes include creating tables for distance matrix and gender information, updating Dorm table for capacity, and adding business configuration logic for scalar parameters and formulas.",
  "or_requirements_analysis": {
    "mapping_gaps_identified": [
      "Distance matrix between student home cities and dorms",
      "Gender information for students and dorms",
      "Binary assignment variable mapping"
    ],
    "missing_data_requirements": [
      "Distance matrix between student home cities and dorms",
      "Gender information for students and dorms"
    ],
    "business_configuration_logic_needs": [
      "Scalar parameters for dorm capacity thresholds",
      "Business logic formulas for distance calculations"
    ]
  },
  "schema_adjustment_decisions": {
    "tables_to_delete": [],
    "tables_to_create": [
      {
        "table_name": "DistanceMatrix",
        "purpose": "objective_coefficients",
        "business_meaning": "Distance from student's home city to dorm"
      },
      {
        "table_name": "GenderInfo",
        "purpose": "constraint_bounds",
        "business_meaning": "Gender information for students and dorms"
      }
    ],
    "tables_to_modify": [
      {
        "table_name": "Dorm",
        "changes": "Add gender column",
        "reason": "To ensure gender constraints are respected in dorm assignments"
      }
    ]
  },
  "business_configuration_logic_updates": {
    "configuration_parameters": {
      "dorm_capacity_threshold": {
        "sample_value": 100,
        "data_type": "INTEGER",
        "business_meaning": "Maximum number of students a dorm can accommodate",
        "optimization_role": "Used in capacity constraints",
        "configuration_type": "scalar_parameter"
      },
      "distance_calculation_formula": {
        "formula_expression": "sqrt((x2 - x1)^2 + (y2 - y1)^2)",
        "data_type": "STRING",
        "business_meaning": "Calculates Euclidean distance between two points",
        "optimization_role": "Used in objective function to minimize total distance",
        "configuration_type": "business_logic_formula"
      }
    },
    "updates_rationale": "Scalar parameters and formulas are better suited for configuration logic as they represent fixed values and calculations that do not require table storage."
  },
  "implemented_optimization_mapping": {
    "objective_coefficients_mapping": {
      "distance[stuid, dormid]": "DistanceMatrix.distance"
    },
    "constraint_bounds_mapping": {
      "student_capacity[dormid]": "Dorm.student_capacity"
    },
    "decision_variables_mapping": {
      "assign[stuid, dormid]": "AssignmentTable.assign"
    }
  },
  "data_dictionary": {
    "tables": {
      "DistanceMatrix": {
        "business_purpose": "Stores distances between student home cities and dorms",
        "optimization_role": "objective_coefficients",
        "columns": {
          "student_id": {
            "data_type": "INTEGER",
            "business_meaning": "Unique identifier for student",
            "optimization_purpose": "Links student to their home city",
            "sample_values": "1, 2, 3"
          },
          "dorm_id": {
            "data_type": "INTEGER",
            "business_meaning": "Unique identifier for dorm",
            "optimization_purpose": "Links dorm to its location",
            "sample_values": "1, 2, 3"
          },
          "distance": {
            "data_type": "FLOAT",
            "business_meaning": "Distance from student's home city to dorm",
            "optimization_purpose": "Used in objective function to minimize total distance",
            "sample_values": "10.5, 15.3, 20.1"
          }
        }
      },
      "GenderInfo": {
        "business_purpose": "Stores gender information for students and dorms",
        "optimization_role": "constraint_bounds",
        "columns": {
          "student_id": {
            "data_type": "INTEGER",
            "business_meaning": "Unique identifier for student",
            "optimization_purpose": "Links student to their gender",
            "sample_values": "1, 2, 3"
          },
          "dorm_id": {
            "data_type": "INTEGER",
            "business_meaning": "Unique identifier for dorm",
            "optimization_purpose": "Links dorm to its gender constraint",
            "sample_values": "1, 2, 3"
          },
          "gender": {
            "data_type": "STRING",
            "business_meaning": "Gender of student or dorm",
            "optimization_purpose": "Ensures gender constraints are respected",
            "sample_values": "Male, Female"
          }
        }
      },
      "Dorm": {
        "business_purpose": "Stores information about dorms",
        "optimization_role": "constraint_bounds",
        "columns": {
          "dorm_id": {
            "data_type": "INTEGER",
            "business_meaning": "Unique identifier for dorm",
            "optimization_purpose": "Links dorm to its capacity and gender",
            "sample_values": "1, 2, 3"
          },
          "student_capacity": {
            "data_type": "INTEGER",
            "business_meaning": "Maximum number of students a dorm can accommodate",
            "optimization_purpose": "Used in capacity constraints",
            "sample_values": "100, 150, 200"
          },
          "gender": {
            "data_type": "STRING",
            "business_meaning": "Gender constraint for dorm",
            "optimization_purpose": "Ensures gender constraints are respected",
            "sample_values": "Male, Female"
          }
        }
      }
    }
  },
  "data_mapping": {
    "objective_sources": [
      "DistanceMatrix.distance"
    ],
    "constraint_sources": [
      "Dorm.student_capacity",
      "GenderInfo.gender"
    ],
    "sample_data_rows": {
      "DistanceMatrix": 3,
      "GenderInfo": 3,
      "Dorm": 3
    }
  },
  "validation": {
    "schema_complete": true,
    "data_consistent": true,
    "math_traceable": true,
    "business_aligned": true,
    "follows_db_standards": true
  }
}
