In the bucket_created_at column, the user can add a value which is the TIMESTAMP datatype.In The bucket_description column, the user can only insert or update the TEXT column, which could also accept NULL.It is so, as both current_status and set_priority are having the datatype as TINYINT. No NULL values are allowed for the current_status and set_priority.When no value is provided for the start_activity_date column, and users try to add or insert a new row, the start_activity_date column shall take the present date from the database server.The start_activity_date column also has the default value set concerning the current date. As these columns do not contain the NOT NULL clause, the user can insert or update any value with a NULL value. The start_activity_date and due_activity_date are the two DATE columns.Also, the user needs to implement a NOT NULL value when the user wants to update or insert the rows in that same column. Therefore, when a user tries to INSERT a NULL value, it shall not accept it. The NOT NULL constraint shows that no value in that specific column could be NULL.When any user tries to enter a string with a length greater than 255, they might not be successful in doing so. It has a maximum length of up to 255 for the names in the bucket_activity_name column.
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