class_docstr: Class for managing database.
class_docstr_tok: ["Class","for","managing","database","."]
docstr: Initialize database
  
  Args:
      path_db: path to sqlite database file
docstr_tok: ["Initialize","database","Args",":","path_db",":","path","to","sqlite","database","file"]
code: def __init__(self, path_db: str) -> None:
      """Initialize database
  
      Args:
          path_db: path to sqlite database file
      """
  
      self.__engine__ = create_engine(f"sqlite:///{path_db}")
      Base.metadata.create_all(self.__engine__)
      self._session = Session(self.__engine__)
  
imports: import pandas
  from pandas.core.frame import DataFrame
  from sqlalchemy import Column, Integer, String, create_engine
  from sqlalchemy.ext.declarative import DeclarativeMeta, declarative_base
  from sqlalchemy.orm import Session
label_desc: Use image node_id 1 to create a new Database object  with example: obj = Database(path_db)