You are building a report using complex SQL aggregations to locate the required data.
In what type of class do you put these SQL statements?

You have added a new attribute origin of the type varchar to the product entity.
Which two calls will filter a product collection with origin set to "California"? (Choose two.)

You have created a custom module which must perform an action immediately after an order is placed, but only
on the store front of the merchant site. You have selected the checkout_submit_all_after as the target event
which the module will observe.
In which file will the event observer be declared?

What happens when a category's is_anchor attribute is set to 1?

How do you pass an array ['one', 'two] as a parameter to you block using the layout XML arguments directive?