A key is a set of attributes that is irreducibly unique and non-nullable within a table.
I'm new to stored procedures and trying to add a composite primary key to a table variable. DECLARE @statistictemp TABLE ( …
sql sql-server sql-server-2008 stored-procedures primary-keyI'd like to determine the primary key of a table using TSQL (stored procedure or system table is fine). Is …
sql sql-server tsql primary-keyCan any kind soul clarify my doubts with a simple example below and identify the superkey, candidate key and primary …
sql oracle primary-key relationalThis question comes up after reading a comment in this question: Database Design When you create a many-to-many table, should …
sql primary-key many-to-manyWhen writing django queries one can use both id/pk as query parameters. Object.objects.get(id=1) Object.objects.get(…
django orm primary-keyI have a model like this: class Hop(models.Model): migration = models.ForeignKey('Migration') host = models.ForeignKey(User, related_name=…
python django django-models model primary-keyPossible Duplicate: How do you like your primary keys? I'm aware of the benefits of using a GUID, as well …
database primary-key guidHow to make it so that the table user_roles defines the two columns (userID, roleID) as a composite primary …
java persistence annotations primary-key many-to-manyFor a number of reasons^, I'd like to use a UUID as a primary key in some of my Django …
django django-models primary-key content-type uuidI would like to create a MySQL table with Pandas' to_sql function which has a primary key (it is …
python mysql pandas primary-key pandasql