For example, with a table similar to this: create table foo(bar int identity, chk char(1) check (chk in('Y', 'N'))); It doesn't matter if the flag is implemented as a char(1), a bit or whatever. I ...
I have an entity that cannot exist without being defined by another, and I want this entity to participate in a many-to-many relationship. Example: An artist has an album (the album cannot exist ...
Inspired by a Django modeling question: Database Modeling with multiple many-to-many relations in Django. The db-design is something like: CREATE TABLE Book ( BookID INT NOT NULL , BookTitle ...
I ran into some trouble modeling an electrical schematic in SQL. The structure I'd like to capture is part ←────────── pin ↑ ↑ part_inst ←───── pin_inst where "inst" is short ...
TL;DR: Prove that in practice, the execution of the alter table table_name drop foreign key constraint_name statement does not corrupt existing data. The important consideration is the execution of ...
We have a production database which is filestream enabled and has grown, within a year, to about 20Gb as it stores documents. On many occasions we need to bring the live data back to UAT or Dev ...