Volume 26, Number 1, March 1997

• 
  Michael J. Franklin: Editor's Notes. 2

Special Section on Environment Information Systems

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  Oliver Günther: Environment Information Systems - Guest Editor's Foreword. 3-4
• 
  David J. Abel, Kerry L. Taylor, Dean Kuo: Integrating Modelling Systems for Environmental Management Information Systems. 5-10
• 
  Anthony Tomasic, Eric Simon: Improving Access to Environmental Data Using Context Information. 11-15
• 
  Ralf Kramer, Ralf Nikolai, Arne Koschel, Claudia Rolker, Peter C. Lockemann, Andree Keitel, Rudolf Legat, Konrad Zirm: WWW-UDK: A Web-based Environmental Meta-Information System. 16-21
• 
  Wolf-Fritz Riekert, Roland Mayer-Föll, Gerlinde Wiest: Management of Data and Services in the Environmental Information System (UIS) of Baden-Württemberg. 22-26
• 
  James Frew, Jeff Dozier: Data Management for Earth System Science. 27-31
• 
  Kenn Gardels: Open GIS and On-Line Environmental Libraries. 32-38

Reports

• 
  Peter Buneman, Louiqa Raschid, Jeffrey D. Ullman: Mediator Languages - a Proposal for a Standard. 39-44
• 
  Arnon Rosenthal, Eric Hughes, Scott Renner, Leonard J. Seligman: A Consumer Viewpoint on "Mediator Languages - a Proposal for a Standard". 45-46

Articles

• 
  Kosmas Karadimitriou, John M. Tyler: Min-Max Compression Methods for Medical Image Databases. 47-52
• 
  Joseph Fong: Converting Relational to Object-Oriented Databases. 53-58
• 
  Shekar Ramanathan, Julia E. Hodges: Extraction of Object-Oriented Structures from Existing Relational Databases. 59-64

Research Surveys

• 
  Surajit Chaudhuri, Umeshwar Dayal: An Overview of Data Warehousing and OLAP Technology. 65-74

Systems and Prototypes

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  Khoa Doan, Catherine Plaisant, Ben Shneiderman, Tom Bruns: Query Previews for Networked Information Systems: A Case Study with NASA Environmental Data. 75-81

Funding News

• 
  Xiaolei Qian: Opportunities in Information Management and Assurance. 82-84

Volume 26, Number 2, June 1997

Joan Peckham (Ed.): SIGMOD 1997, Proceedings ACM SIGMOD International Conference on Management of Data, May 13-15, 1997, Tucson, Arizona, USA.
Contents

Volume 26, Number 3, September 1997

• 
  Michael J. Franklin: Editor's Notes. 2
• 
  Richard T. Snodgrass: Chair's Message. 3

Articles

• 
  Mary F. Fernandez, Daniela Florescu, Alon Y. Levy, Dan Suciu: A Query Language for a Web-Site Management System. 4-11
• 
  Daniel Barbará, Mark Sullivan: Quasi-Cubes: Exploiting Approximations in Multidimensional Databases. 12-17
• 
  Gilles Clement, Christian Larouche, Denis Gouin, Paul Morin, Henry Kucera: OGDI: Toward Interoperability among Geospatial Databases. 18-23
• 
  Thanasis Hadzilacos, Nectaria Tryfona: An Extended Entity-Relationship Model for Geographic Applications. 24-29
• 
  Nenad Jukic, Susan V. Vrbsky: Asserting Beliefs in MLS Relational Models. 30-35

Reports

• 
  Abraham Silberschatz, Stanley B. Zdonik: Database Systems - Breaking Out of the Box. 36-50
• 
  Krithi Ramamritham, Nandit Soparkar: Report on DART '96: Databases: Active and Real-Time (Concepts meet Practice). 51-53

Systems and Prototypes

• 
  Jason McHugh, Serge Abiteboul, Roy Goldman, Dallan Quass, Jennifer Widom: Lore: A Database Management System for Semistructured Data. 54-66

Research Centers

• 
  Birgitta König-Ries, Peter C. Lockemann: Research in Databases and Data-Intensive Applications - Computer Science Department and FZI, University of Karlsruhe. 67-72

Volume 26, Number 4, December 1997

• 
  Michael J. Franklin: Editor's Notes. 2
• 
  Richard T. Snodgrass: Chair's Message. 3

Management of Semi-Structured Data

• 
  Dan Suciu: Foreword: Management of Semistructured Data. 4-7
• 
  Naveen Ashish, Craig A. Knoblock: Wrapper Generation for Semi-structured Internet Sources. 8-15
• 
  Paolo Atzeni, Giansalvatore Mecca, Paolo Merialdo: Semistructured und Structured Data in the Web: Going Back and Forth. 16-23
• 
  Jason McHugh, Jennifer Widom: Integrating Dynamically-Fetched External Information into a DBMS for Semistructured Data. 24-31
• 
  Robert A. Nado, Scott B. Huffman: Extracting Entity Profiles from Semistructured Information Spaces. 32-38
• 
  Svetlozar Nestorov, Serge Abiteboul, Rajeev Motwani: Infering Structure in Semistructured Data. 39-43

Reports

• 
  Franz Baader, Manfred A. Jeusfeld, Werner Nutt: Intelligent Access to Heterogeneous Information Sources: Report on the 4th Workshop on Knowledge Representation Meets Databases. 44-48
• 
  Richard McClatchey, Gottfried Vossen: Workshop on Workflow Management in Scientific and Engineering Applications - Report. 49-53
• 
  Stefan Conrad, Barry Eaglestone, Wilhelm Hasselbring, Mark Roantree, Fèlix Saltor, Martin Schönhoff, Markus Strässler, Mark W. W. Vermeer: Research Issues in Federated Database Systems: Report of EFDBS '97 Workshop. 54-56

Systems and Prototypes

• 
  Ashish Gupta, Venky Harinarayan, Anand Rajaraman: Virtual Database technology. 57-61

Industry Perspectives

• 
  Leonard J. Seligman: Industry Perspectives. 62
• 
  Jim Gray, Goetz Graefe: The Five-Minute Rule Ten Years Later, and Other Computer Storage Rules of Thumb. 63-68

Research Centers

• 
  Sushil Jajodia, Daniel Barbará, Alexander Brodsky, Larry Kerschberg, Amihai Motro, Edgar H. Sibley, Xiaoyang Sean Wang: Information Systems Research at George Mason University. 69-74
• 
  Peter Dadam, Wolfgang Klas: The Database and Information System Research Group at the University of Ulm. 75-79