This volume contains papers presented at the second international
workshop on extensions of logic programming, which was held at the
Swedish Institute of Computer Science, Stockhom, January 27-29, 1991.
The 12 papers describe and discuss several approaches to extensions of
logic programming languages such as PROLOG, as well as connections
between logic programming and functional programming, theoretical
foundations of extensions, applications, and programming methodologies.
The first workshop in this series was held in T}bingen in 1989 and its
proceedings areavailable as LNCS 475. The third workshop will be held in
Bologna in 1992.