joins

-
A JOIN is a means for combining fields from two tables by using values common to each. ANSI-standard SQL specifies four types of JOIN: INNER, OUTER, LEFT, and RIGHT.

http://en.wikipedia.org/wiki/Join_(SQL)

Popular posts from this blog

-
selection, iteration, sequence ubuntu-12043-desktop-amd64 VirtualBox-438-92456-Win http://medical-dictionary.thefreedictionary.com/Atomic+value http://en.wikipedia.org/wiki/Atomic_value http://www.docstoc.com/docs/26533470/EXAMPLE-FLIGHT-ITINERARY http://www.mulesoft.org/documentation/display/33X/Flight+Reservation+Example
Read more

learning normalization today data modeling

-
http://learn.jquery.com/about-jquery/how-jquery-works/ http://cocoadevcentral.com/d/learn_cocoa/ http://connect.microsoft.com/VisualStudio/feedback/details/350012/visual-studio-for-mac http://forums.appleinsider.com/t/67790/c-on-mac "I swear to construct my tables so that all nonkey columns are dependant on the key the whole key and nothing but the key so help me codd" normalization: referential integrity constraints not null unique key primary keys composite primary keys check constraint
Read more