So, I have this relations on my tables (see image) and I need to understand some things. I'll enumerate what I understand and what I need from yours is to say if I'm right or not and in case I'm not ...
Im designing my first eCommerce schema. I've been reading around the subject for a little while, and am a bit confused about the relationship between an order_line_item and a product A product can ...
I'd like to limit a PostgreSQL 9.2 tstzrange to valid dates at both ends. No NULLs nor 'infinity'. Various revisions of this SQL isn't constraining '-/+infinity' input: CREATE TABLE bill ( id ...
Business case is. 1)Users print document on paper 2)users carry printed paper to Boss, Boss sing on paper 3)after that users going to administrator to digitally sign that paper. My task is to help ...
This is a cross-post from Stack Overflow. I figured I might get more interesting thoughts here. I am using PostgreSQL but I figure most of the top-end db's must have some similar capabilities, and ...