Design a simple database class with insert and query methods

Design a simple database class with insert and query methods. Your task is to implement the insert and query functions. The query function should mimic SQL syntax to support queries like: select name from table; select name, birthday from table; Provide some test cases to ensure the code can compile and run correctly, and that the code is clean and understandable. Follow-up question: Add the functionality to include a where clause in the query function, supporting queries like: select name, birthday from table where birthday > '1900-01-01'; Provide test cases and ensure the code compiles and runs correctly. Example Input insert({'name': 'Alice', 'birthday': '1995-07-13'}) query('select name from table')