Declare @var?

I am trying to get a grasp on the Sql Stored procedures it seems i dont really understnad what DECLARE @.Date DateTime means? I mean i think it means that i am just declaring a varible name Date that will hold a DateTime Value? is that correct or is it more to it?

CREATE PROCEDURE dbo.Tracking_GetStatus
AS
DECLARE @.Date DateTime
DECLARE @.Begining DateTime
DECLARE @.Ending DateTime
SET @.Date = GETDATE()
SET @.Begining = DATEADD(ss,(DATEPART(ss,@.Date)*-1),
DATEADD(mi,(DATEPART(mi,@.Date)*-1),
DATEADD(hh,(DATEPART(hh,@.Date)*-1),@.Date)))
SET @.Ending = DATEADD(ss,-1,
DATEADD(dd,1,DATEADD(ss,(DATEPART(ss,@.Date)*-1),
DATEADD(mi,(DATEPART(mi,@.Date)*-1),
DATEADD(hh,(DATEPART(hh,@.Date)*-1),@.Date)))))

SELECT
Vehicl,
UpdateTi
XCoord,
YCoord,
Status
FROM Track
WHERE UpdateTime >= @.Begining
AND UpdateTime <= @.Ending
RETURN

GO

You are correct. The DECLARE statement declares variables in T-SQL. All variables MUST be declared, and they only are only scoped (available) to the procedure or batch in which they are declared. The variable will initially contain NULL as it's value and needs to be initialized for use, but you did that with each of your SET statements.

Everything looks fine. Are you having a problem?