  The Sloan Digital Sky Survey (SDSS) will provide a complete imaging and
spectroscopic survey of the high-latitude northern sky. The 2D survey will
image the sky in five colors and will contain nearly 5 x 107 galaxies to g ~
23m. The spectroscopic survey will obtain spectra of the brightest 106
galaxies, 105 quasars, and 103.5 rich clusters of galaxies (to g~18.3-19.3m,
respectively). I summarize some of the science opportunities that will be made
possible by this survey for studying the clustering and large-scale structure
of the universe.
  The survey will identify a complete sample of several thousand rich clusters
of galaxies, both in 2D and 3D - the largest automated sample yet available.
The extensive cluster sample can be used to determine critical clustering
properties such as the luminosity-function, velocity-function, and
mass-function of clusters of galaxies (a critical test for cosmological
models), detailed cluster dynamics and W(dyn), the cluster correlation function
and its dependence on richness, cluster evolution, superclustering and voids to
the largest scales yet observed, the motions of clusters and their large-scale
peculiar velocity field, as well as detailed correlations between x-ray and
optical properties of clusters, the density-morphology relation, and
cluster-quasar associations. The large redshift survey, reaching to a depth of
600h-1 Mpc, will accurately map the largest scales yet observed, determine the
power-spectrum and correlation function on these large scales for different
type galaxies, and study the clustering of quasars to high redshifts (z 4). The
implications of the survey for cosmological models, the dark matter, and W are
also discussed.
