Hi all, I have 2 questions concerning lab 1. 1. There are several inconsistencies regarding the data types in the requirements and expected outcomes. To pass the auto test: `street`,`city`,`postcode` columns in Q1 should be type `VARCHAR` instead of `CHAR` `position` column in Q2 should be type `VARCHAR` instead of `CHAR` Could anyone please clarify which data type should be used for submitting answers? 2. I've read on stackoverflow that we do not need to specify "not null" for primary keys, but this is not the case for me. I had to add the `NOT NULL` constraints manually for the `notnull` flags to be 1. Does anyone know why this is happening? Thanks!