//purpose: remove all records from a table.
 public void ClearTable <LineItem>(string database_id)
 {
     SqliteDataAccess.ClearTable(database_id, "delete from LineItem");
 }
 //purpose: remove all records from a table.
 public void ClearTable <Tool>(string database_id)
 {
     SqliteDataAccess.ClearTable(database_id, "delete from Tool");
 }