Special Issue on Advanced Database Technologies =============================================== . FOREWORD ....................................................... 1333 Shunsuke UEMURA PAPERS ====== [Advanced Applications] . Database Systems for Structured Documents ...................... 1335 Ron SACKS-DAVIS, Timothy ARNOLD-MOORE, and Justin ZOBEL . Abstraction and Inheritance of HyperLinks in an Object-Oriented Hypertext Database System TextLink/Gem ......................... 1343 Qing QIAN, Masaaki TANIZAKI, and Katsumi TANAKA . Architecture and Storage Structure of an Interactive Multimedia Information System ............................................. 1354 Ryoji KATAOKA, Tetsuji SATOH, and Ushio INOUE . Data Model and Architecture of Multimedia Database for Engineering Applications ................................................... 1362 Hiroshi ARISAWA, Takashi TOMII, Hitoshi YUI, and Hidehiko ISHIKAWA . Cooperative Query Formulation for Geographic Databases ......... 1369 Masatoshi ARIKAWA, Ken'ichi HORIKAWA, and Yahiko KAMBAYASHI . Data Classification Component in a Deductive Database System and Its Application to Protein Structural Analysis ..................... 1377 Akio NISHIKAWA, Kenji SATOU, Emiko FURUICHI, Satoru KUHARA, and Kazuo USHIJIMA [Interoperability] . Co-database Approach to Database Interoperability .............. 1388 Athman BOUGUETTAYA and Stephen MILLINER . The Design and Implementation of an Interoperable Database System Based on Scripts and Active Objects ............................ 1396 Hiroshi ISHIKAWA, Kazumi KUBOTA, and Koki KATO . An HTTP Gateway for Interactive Relational Database Query with Deferred Reply ................................................. 1407 Michael BJONRN and Ryosuke HOTAKA [Implementation] . Rule-Based Query Rewriting in the Flora Optimizer .............. 1412 Daniela FLORESCU and Patrick VALDURIEZ . Design and Performance Analysis of Indexing Schemes for Set Retrieval of Nested Objects .................................... 1424 Yoshiharu ISHIKAWA and Hiroyuki KITAGAWA . Efficient Retrieval of Labeled Binary Trees .................... 1433 Hans ARGENTON and Peter BECKER . Implementation and Performance Evaluation of a Distributed Paged-Object Storage Server .................................... 1439 Guangyi BAI and Akifumi MAKINOUCHI [Model] . On Locking Protocols in Object-Oriented Database Systems ....... 1449 Shinichi TANIGUCHI, Budiarto, and Shojiro NISHIO . Specialization Constraints for a Complex Object Model Supporting Selective Inheritance .......................................... 1458 Nobutaka SUZUKI and Minoru ITO . A Statically Typed, Temporal Object-Oriented Database Technology ....................................................... 1469 Suad ALAGICL . An Object-Oriented Approach to Temporal Multimedia Data Modeling ....................................................... 1477 Yoshifumi MASUNAGA Regular Section =============== PAPERS ====== [Automata, Languages and Theory of Computing] . Control Problem of a Class of Pushdown Automata Based on Posets and Its Application to Resolution Deductions ....................... 1488 Susumu YAMASAKI [Computer Systems] . A Block Management Mechanism for Multimedia Files .............. 1498 Tae Il JEONG and Sung Jo KIM [Bio-Cybernetics and Neurocomputing] . A New Approach to Rule Learning Based on Fusion of Fuzzy Logic and Neural Networks ................................................ 1509 Rui-Ping LI and Masao MUKAIDONO LETTER ====== [Speech Processing and Acoustics] . The Role of Coherence in Regulating the Time-Asymmetry of a Spectral Predictive Discrimination Model ................................ 1515 P.V.S.RAO and R.RAVEENDRAN . ABSTRACTS (IEICE Trans., Vol.J78-D-I, J78-D-II, No.11 in Japanese) ....................................................... 1519