hunk.code_window: ## Creating a new connection from the configuration file
   Most of the times you want to store your connection options in a separate configuration file.
   It makes it convenient and easy to manage. 
   TypeORM supports multiple configuration sources.
   You only need to create a `ormconfig.[format]` file in the root directory of your application (near `package.json`),
   put your configuration there and in your app call `createConnection()` without any configuration passed:
  
hunk.labels: keep keep keep keep replace keep keep keep
hunk.after_edit: It makes it convenient and easy to manage.
  
hunk.file_path: docs/using-ormconfig.md
hunk.type: replace
file: import {Column} from "../../../../src/decorator/columns/Column";
  import {Person, PersonType} from "./Person";
  import {ChildEntity} from "../../../../src/decorator/entity/ChildEntity";
  
  @ChildEntity(PersonType.Employee)
  export class Employee extends Person {
  
      @Column()
      salary: number;
  
      @Column()
      shared: string;
  
      constructor() {
          super();
          this.type = 1;
      }
  
  }