The Next Generation Information Technologies and Systems (NGJTS) workshop has been held in Israel every two years since 1993. The NGITS'99 clearly reflects the trend of many of the basic technologies in the traditional areas of database management systems being increasingly deployed in new systems and applications supported by a huge growth in computing speed, storage capacity, communications and world-wide web. In turn, these applications require serious improvements in data availability, information integrity and knowledge extraction. The workshop gathered many reputable members of the research community. Out of the thirty-four submissions, twenty-two (seventeen full-length papers and five short papers) were selected by the Program Committee to be presented at the workshop and to be included in the Proceedings. The papers were classified in five broad topics underlying the workshop sessions, as follows:
edited by Ron Y. Pinter and Shalom Tsur
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