  We consider the problem of sampling in de Branges spaces and develop some
necessary conditions and some sufficient conditions for sampling sequences,
which generalize some well-known sampling results in the Paley-Wiener space.
These conditions are obtained by identifying the main construction with Naimark
dilation of frames--embedding the de Branges space into a larger de Branges
space while embedding the kernel functions associated with a sampling sequence
into a Riesz basis for the larger space.
