The field of Object-Oriented Programming (OOP) has attracted increasing attention during the last few years. OOP is now recognized as an important tool for making better and more flexible information systems. This book is the proceedings of the second European Conference on Object-Oriented Programming (ECOOP '88) that was held in Oslo, Norway, from August 15 to 17, 1988. The objectives of ECOOP '88 were to present the best international work in the field of OOP to interested persons from industry and academia, and to be a forum for the exchange of ideas and the growth of professional relationships. Each of the 103 papers submitted was subject to a thorough refereeing process. The 22 papers selected are collected in these proceedings together with one invited paper. These 23 papers from 13 different countries comprise the currently best international work in the field of OOP. The contents of the papers include areas such as: Theory, Languages, Didactics, Implementation, Applications, Concurrency and Databases. The interest in object-oriented programming is rapidly increasing, especially within the areas of Concurrency and Databases. With its 5 papers on concurrency and 7 papers on databases, the proceedings contain important new material on these subjects. This book is a must for persons who want to keep themselves up to date in the field of OOP.