Answer:
The expression is :
π[cd) + π(g,h) ],[π(e,f)+π(a,b)])
We will use foreign key and primary key
Well since Windows XP runs on Windows 2000 technology,it would be "slow".Also that Windows XP had MSN,which expired 15 years ago,but the good thing about Windows XP is that it can connect to the internet via WiFi without the computers hardware used for WiFi(PC only).Also that Windows XP has a logo on the start-up screen.Windows Vista on the other hand, doesn't have a logo on the start-up screen,but shows a Windows Vista animated logo atfer the start-up screen.Also that some people named Windows Vista "The first Windows 7".But somewhat,Windows Vista ran faster than Windows XP at starting up.Windows Vista was old,but it sold better than Windows XP.
U could first highlight text, right click then copy, and then Ctrl + v. You could find Ctrl (or control) under the shift button to your left
I hope this helped:D
Answer:
To query the access database to return a group of records with lastname starting with A, change the LastName field's criteria to A, and then click the run button in the results ribbon group of the design ribbon tab.
Explanation:
Microsoft Access is a database management software used to create, manage, and query a database. Just like a spreadsheet and in relational databases, it stores data in records (rows) and fields (columns). To output the result of a query, the run button in the design ribbon tab is clicked.
