  Large-scale self-consistent multiconfiguration Dirac--Hartree--Fock and
relativistic configuration interaction calculations are reported for the $n
\leq 6$ levels in Be-like ions from B II to Ne VII. Effects from electron
correlation are taken into account by means of large expansions in terms of a
basis of configuration state functions, and a complete and accurate data set of
excitation energies, lifetimes, wavelengths, and electric dipole, magnetic
dipole, electric quadrupole, and magnetic quadrupole line strengths, transition
rates, and oscillator strengths for these levels is provided for each ion.
Comparisons are made with available experimental and theoretical results. The
uncertainty of excitation energies is assessed to be 0.01\% on average, which
makes it possible to find and rule out misidentifications and aid new line
identifications involving high-lying levels in astrophysical spectra. The
complete data set is also useful for modeling and diagnosing astrophysical
plasmas.
