```json { "action": "final", "content": "Based on the dataset profile, here are the columns in the `titanic` dataset, their data types, and their meanings:\n\n### Passenger Details\n* **PassengerId** (`DOUBLE`): A unique identifier assigned to each passenger.\n* **Name** (`VARCHAR`): The full name of the passenger.\n* **Sex** (`VARCHAR`): The gender of the passenger (e.g., male, female).\n* **Age** (`DOUBLE`): The age of the passenger in years. *(Note: Contains 177 missing values)*\n\n### Ticket & Travel Information\n* **Pclass** (`DOUBLE`): The passenger's ticket class, serving as a proxy for socio-economic status (1 = 1st class, 2 = 2nd class, 3 = 3rd class).\n* **Ticket** (`VARCHAR`): The specific ticket number.\n* **Fare** (`DOUBLE`): The amount of money paid for the ticket.\n* **Cabin** (`VARCHAR`): The passenger's cabin number. *(Note: Contains 687 missing values)*\n* **Embarked** (`VARCHAR`): The port where the passenger boarded the ship (C = Cherbourg, Q = Queenstown, S = Southampton).\n\n### Family Relations\n* **SibSp** (`DOUBLE`): The number of siblings or spouses the passenger had aboard the Titanic.\n* **Parch** (`DOUBLE`): The number of parents or children the passenger had aboard the Titanic.\n\n### Target Variable\n* **Survived** (`DOUBLE`): Indicates whether the passenger survived the sinking (0 = No, 1 = Yes).\n\n### System Metadata\n*(These columns are automatically generated during data ingestion and are not part of the original Titanic data)*\n* **_ingestion_timestamp** (`TIMESTAMP WITH TIME ZONE`): When the record was loaded into the database.\n* **_batch_id** (`VARCHAR`): The specific batch identifier for the data load.\n* **_source_file** (`VARCHAR`): The file path from which the data was read.\n* **_source_system** (`VARCHAR`): The system that provided the data (e.g., API)." } ```