hwo to retrieve data from two tables and display it in single view

[eluser]jeanel16[/eluser]
no i dont know how

my task is to create a table which contains

menudb
id menu_name
1 inbox
2 sent
3 settings
4 reports

it needs to be displayed in the view at the left side it will be a navigating link that if i click on the inbox the msgdb table will appear

msgdb table
id email name subject message date
1 [email protected] heidi Hello! hi! 05/25/2012

i dont know how i can make the two tables appear waaaaaaa xD