Iteration 1 - DATA_ENGINEER
Sequence: 2
Timestamp: 2025-07-27 23:36:21

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 20 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": "network_1",
  "iteration": 0,
  "business_context": "A high school wants to optimize the social engagement of students by maximizing the number of mutual friendships. Each student can have a limited number of friends, and the goal is to maximize the number of mutual friendships within these constraints.",
  "optimization_problem_description": "Maximize the number of mutual friendships among students, where a mutual friendship is defined as a pair of students who both list each other as friends. Each student can have a limited number of friends, and the optimization will determine the optimal set of friendships to maximize mutual connections.",
  "optimization_formulation": {
    "objective": "maximize \u2211(x_ij + x_ji) for all i, j where x_ij and x_ji are binary variables indicating if student i considers student j a friend and vice versa",
    "decision_variables": "x_ij: binary variable indicating if student i considers student j a friend",
    "constraints": [
      "\u2211(x_ij) \u2264 max_friends for all i",
      "x_ij + x_ji \u2264 1 for all i, j",
      "x_ij is binary for all i, j"
    ]
  },
  "current_optimization_to_schema_mapping": {
    "objective_coefficients": {
      "x_ij[i,j]": {
        "currently_mapped_to": "Friend.student_id, Friend.friend_id",
        "mapping_adequacy": "good",
        "description": "binary variable indicating if student i considers student j a friend"
      }
    },
    "constraint_bounds": {
      "max_friends[i]": {
        "currently_mapped_to": "missing",
        "mapping_adequacy": "missing",
        "description": "maximum number of friends a student can have"
      }
    },
    "decision_variables": {
      "x_ij[i,j]": {
        "currently_mapped_to": "Friend.student_id, Friend.friend_id",
        "mapping_adequacy": "good",
        "description": "binary variable indicating if student i considers student j a friend",
        "variable_type": "binary"
      }
    }
  },
  "missing_optimization_requirements": [
    "Maximum number of friends each student can have (max_friends)"
  ],
  "iteration_status": {
    "complete": false,
    "confidence": "medium",
    "next_focus": "Determine the maximum number of friends each student can have to complete the model"
  }
}





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

JSON STRUCTURE REQUIRED:

{
  "database_id": "network_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": "network_1",
  "iteration": 1,
  "implementation_summary": "Schema changes include adding a table for constraint bounds and updating configuration logic for scalar parameters. The 'max_friends' constraint is moved to configuration logic due to insufficient data for a table.",
  "or_requirements_analysis": {
    "mapping_gaps_identified": [
      "max_friends constraint is missing a mapping"
    ],
    "missing_data_requirements": [
      "Maximum number of friends each student can have (max_friends)"
    ],
    "business_configuration_logic_needs": [
      "max_friends as a scalar parameter"
    ]
  },
  "schema_adjustment_decisions": {
    "tables_to_delete": [],
    "tables_to_create": [
      {
        "table_name": "Friend",
        "purpose": "decision_variables",
        "business_meaning": "Represents friendships between students"
      }
    ],
    "tables_to_modify": []
  },
  "business_configuration_logic_updates": {
    "configuration_parameters": {
      "max_friends": {
        "sample_value": "5",
        "data_type": "INTEGER",
        "business_meaning": "Maximum number of friends a student can have",
        "optimization_role": "Used as a constraint in the optimization model",
        "configuration_type": "scalar_parameter"
      }
    },
    "updates_rationale": "The 'max_friends' parameter is better suited for configuration logic due to its scalar nature and lack of sufficient data for a table."
  },
  "implemented_optimization_mapping": {
    "objective_coefficients_mapping": {
      "x_ij[i,j]": "Friend.student_id, Friend.friend_id"
    },
    "constraint_bounds_mapping": {
      "max_friends[i]": "business_configuration_logic.max_friends"
    },
    "decision_variables_mapping": {
      "x_ij[i,j]": "Friend.student_id, Friend.friend_id"
    }
  },
  "data_dictionary": {
    "tables": {
      "Friend": {
        "business_purpose": "Represents friendships between students",
        "optimization_role": "decision_variables",
        "columns": {
          "student_id": {
            "data_type": "INTEGER",
            "business_meaning": "ID of the student",
            "optimization_purpose": "Identifies the student in the friendship pair",
            "sample_values": "1, 2, 3"
          },
          "friend_id": {
            "data_type": "INTEGER",
            "business_meaning": "ID of the friend",
            "optimization_purpose": "Identifies the friend in the friendship pair",
            "sample_values": "2, 3, 4"
          }
        }
      }
    }
  },
  "data_mapping": {
    "objective_sources": [
      "Friend.student_id, Friend.friend_id"
    ],
    "constraint_sources": [
      "business_configuration_logic.max_friends"
    ],
    "sample_data_rows": {
      "Friend": 3
    }
  },
  "validation": {
    "schema_complete": true,
    "data_consistent": true,
    "math_traceable": true,
    "business_aligned": true,
    "follows_db_standards": true
  }
}
