• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Day 4. Building a Database and Organizing Data > Introducing Data Relationships

Introducing Data Relationships

Herein lies the beauty of relational databases. Instead of keying in customer information for each of my orders and then duplicating the effort when I add new customers to the Customers table, I can link the data across tables.

Linking or relating data is the act of sharing it between two or more tables. When you input new data or update existing data, it is automatically updated across all tables.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint