DataModule 03
Table & record
Tap a plane, or press Place order to watch one click travel down.
A table is a spreadsheet-like list of one kind of thing. A record is one row in it: one order, one customer.
Interactive demo
Click a layer of the app
Click a layer
Views
The screens a person actually looks at. Each web address maps to one view, assembled out of components.
How a click travels
component click -> logic checks the rules -> database records the change -> view re-draws with the new data
What makes this work
01
Columns
The fields every row shares
02
Keys
The id that makes a row findable
03
Relations
Links between two tables
Related concepts