T-SQL what kind of constraint to use - sql-server

Question

I have the following two tables (only relevant key columns shown)
CREATE TABLE [dbo].[Jobs](
[ID] [int] IDENTITY(1,1) NOT NULL,
[JobNo] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_Jobs] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
CREATE TABLE [dbo].[Items](
[JobID] [int] NOT NULL,
[BarcodeNo] [nvarchar](50) NOT NULL,
[SerialNo] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_Items_1] PRIMARY KEY CLUSTERED
(
[JobID] ASC,
[BarcodeNo] ASC,
[SerialNo] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
I need to make sure that when an item is entered, the JobID matches an ID in the Jobs table. It seems, I can't use a FK because the PK in the items table is a composite key of 3 columns.
TIA
Mark
What kind of constraint can I use for this?

Answer 1

A foreign key works fine.
There's no problem with having the single column [dbo].[Items].[JobID] reference the PK of jobs.
CREATE TABLE [dbo].[Jobs]
(
[ID] [INT] IDENTITY(1, 1) NOT NULL,
[JobNo] [NVARCHAR](50) NOT NULL,
CONSTRAINT [PK_Jobs] PRIMARY KEY CLUSTERED ( [ID] ASC )
WITH (PAD_INDEX = OFF,
STATISTICS_NORECOMPUTE = OFF,
IGNORE_DUP_KEY = OFF,
ALLOW_ROW_LOCKS = ON,
ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
)
ON [PRIMARY]
CREATE TABLE [dbo].[Items]
(
[JobID] [INT] NOT NULL REFERENCES [dbo].[Jobs]([ID]), /*<-- FK declaration*/
[BarcodeNo] [NVARCHAR](50) NOT NULL,
[SerialNo] [NVARCHAR](50) NOT NULL,
CONSTRAINT [PK_Items_1] PRIMARY KEY CLUSTERED ( [JobID] ASC, [BarcodeNo] ASC, [SerialNo] ASC )
WITH (PAD_INDEX = OFF,
STATISTICS_NORECOMPUTE = OFF,
IGNORE_DUP_KEY = OFF,
ALLOW_ROW_LOCKS = ON,
ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
)
ON [PRIMARY]