@INPROCEEDINGS{GioSIGMOD93,
   AUTHOR = {G. Wiederhold},
   TITLE = "Intelligent Integration of Information",
   BOOKTITLE = "Proceedings of the ACM SIGMOD International
       Conference on Management of Data",
   PAGES = {434-437},
   YEAR = 1993
}

@ARTICLE{GioComputer,
   AUTHOR = {G. Wiederhold},
   TITLE = "Mediators in the Architecture of Future Information Systems",
   JOURNAL = "IEEE Computer",
   VOLUME = 25,
   PAGES = {38-49},
   YEAR = 1992
}

@ARTICLE{LotusNotes3,
   AUTHOR = {D. S. Marshak},
   TITLE = "Lotus {N}otes Release 3",
   JOURNAL = "Workgroup Computing Report",
   VOLUME = 16,
   PAGES = {3-28},
   YEAR = 1993
}

@ARTICLE{Pegasus,
   AUTHOR = {R. Ahmed and others},
   TITLE = "The {P}egasus Heterogeneous Multidatabase System",
   JOURNAL = "IEEE Computer",
   VOLUME = 24,
   PAGES = {19-27},
   YEAR = 1991
}

@ARTICLE{KimResolve,
   AUTHOR = {W. Kim and others},
   TITLE = "On Resolving Schematic Heterogeneity in Multidatabase  Systems",
   JOURNAL = "Distributed And Parallel Databases",
   VOLUME = 1,
   PAGES = {251-279},
   YEAR = 1993
}

@INPROCEEDINGS{Bertino,
   AUTHOR = {E. Bertino},
   TITLE = "Integration of Heterogeneous Data Repositories by using
       Object-Oriented Views",
   BOOKTITLE = "Proc Intl Workshop on Interoperability in Multidatabase Systems",
   ADDRESS = {Kyoto, Japan},
   PAGES = {22-29},
   YEAR = 1991
}

@ARTICLE{BatiniLenzeriniNavathe,
   AUTHOR = {C. Batini and M. Lenzerini and S. B. Navathe},
   TITLE = "A Comparative Analysis of Methodologies for Database
      Schema Integration",
   JOURNAL = "ACM Computing Surveys",
   VOLUME = 18,
   PAGES = {323-364},
   YEAR = 1986
}

@INPROCEEDINGS{KiferKimSagiv,
   AUTHOR = {M. Kifer and W. Kim and Y. Sagiv},
   TITLE = "Querying Object-Oriented Databases",
   BOOKTITLE = "Proc. ACM SIGMOD",
   PAGES = {59-68},
   YEAR = 1992
}

@INCOLLECTION{KorthQuery,
   AUTHOR = {H. F. Korth and M. A. Roth},
   TITLE = "Query Languages for Nested Relational Databases",
   BOOKTITLE = "Nested Relations and Complex Objects in Databases",
   PAGES = {190-204},
   PUBLISHER = "Springer-Verlag",
   YEAR = 1989
}

@ARTICLE{RothExtendedAlgebra,
   AUTHOR = {M. A. Roth and H. F. Korth and A. Silberschatz},
   TITLE = "Extended Algebra and Calculus for Nested Relational Databases",
   JOURNAL = "ACM Transactions on Database Systems",
   VOLUME = 13,
   PAGES = {389-417},
   YEAR = 1988
}

@ARTICLE{UllmanCACM,
   AUTHOR = {A. Silberschatz and M. Stonebraker and J. D. Ullman},
   TITLE = "Database Systems: Achievements and Opportunities",
   JOURNAL = "Communications of the ACM",
   VOLUME = 34,
   PAGES = {110-120},
   YEAR = 1991
}

@ARTICLE{EliassenKarlsen,
   AUTHOR = {F. Eliasen and R. Karlsen},
   TITLE = "Interoperability and Object Identity",
   JOURNAL = "SIGMOD Record",
   VOLUME = 20,
   PAGES = {25-29},
   YEAR = 1991
}

@INPROCEEDINGS{InformationBus,
   AUTHOR = {B. Oki and others},
   TITLE = "The {I}nformation {B}us---An Architecture for Extensible
     Distributed Systems",
   BOOKTITLE = "Proc ACM Symposium on
     Operating System Principles", 
   ADDRESS = {Asheville, NC},
   PAGES = {58-68},
   YEAR = 1993
}

@TECHREPORT{ElmagarmidHelal,
   AUTHOR = {A. K. Elmagarmid and A. A. Helal},
   TITLE = "Hetrogeneous Database Systems",
   TYPE = {Technical Report},
   NUMBER = {TR-86-004},
   INSTITUTION = {Program of Computer Engineering, Pennsylvania
      State University}, 
   ADDRESS = {University Park, PA},
   YEAR = 1986
}

@BOOK{Cattell,
   AUTHOR = {R. G. G. Cattell},
   TITLE = "Object Data Management",
   PUBLISHER = "Addison-Wesley",
   YEAR = 1991
}

@BOOK{Gio87,
   AUTHOR = "G. Wiederhold",
   TITLE = "File Organization for Database Design",
   PUBLISHER = "McGraw Hill",
   ADDRESS = "New York",
   YEAR = 1987
}

@BOOK{GeneserethNillson,
   AUTHOR = {M.R. Genesereth and N.J. Nillson},
   TITLE = "Logical Foundations of Artificial Intelligence",
   PUBLISHER = "Morgan Cauffman",
   YEAR = 1988
}

@ARTICLE{LitwinMarkRoussopoulos,
   AUTHOR = {W. Litwin and L. Mark and N. Roussopoulos},
   TITLE = "Interoperability of Multiple Autonomous Databases",
   JOURNAL = "ACM Computing Surveys",
   VOLUME = 22,
   PAGES = {267-293},
   YEAR = 1990
}

@ARTICLE{Thomas,
   AUTHOR = {G. Thomas and others},
   TITLE = "Heterogeneous Distributed Database Systems for Production Use",
   JOURNAL = "ACM Computing Surveys",
   VOLUME = 22,
   PAGES = {237-266},
   YEAR = 1990
}


@BOOK{Gupta,
   AUTHOR = {A. Gupta},
   TITLE = "Integration of Information Systems: Bridging
        Heterogeneous Databases",
   PUBLISHER = "IEEE Press",
   YEAR = 1989
}


@ARTICLE{MarkRoussopoulos,
   AUTHOR = {L. Mark and N. Roussopoulos},
   TITLE = "Information interchange between self-describing databases",
   JOURNAL = "IEEE Data Engineering",
   VOLUME = 10,
   PAGES = {46-52},
   YEAR = 1987
}

@MISC{corba,
      AUTHOR= {Digital Equipment Corporation and Hewlett-Packard Company
              and HyperDesk Corporation and NCR Corporation and
              Object Design Inc. and SunSoft Inc.},
      TITLE="The {C}ommon {O}bject {R}equest {B}roker:{A}rchitecture and {S}pecification",
      NOTE="Available by ftp at {\tt omg@omg.org}, file
            {\tt pub/cb/corba\_1.2.ps.Z.uu}. Revision 1.2, 
            Draft 29 December 1993"
     }

@MISC{ramana-engine,
      AUTHOR= {R. Yerneni},
      TITLE = "The Datamerge Engine of MedMaker",
      NOTE= "Available by ftp at"
}

@BOOK{odmg,
  AUTHOR = "R.G.G Cattell",
  NOTE = "with contributions from Tom Atwood et.al.",
  TITLE = "The {O}bject {D}atabase {S}tandard: ODMG-93",
  PUBLISHER = "Morgan Kaufmann Publishers",
  YEAR = 1994
}


@INPROCEEDINGS{Fankhauser,
   AUTHOR = {P. Fankhauser and W. Litwin and E.J. Neuhold and M. Screfl},
   TITLE = "Global view definition and multidatabase languages: two approaches to database integration",
   BOOKTITLE = "Research into Networks and Distributed Applications. European Teleinformatics Conf.",
   ADDRESS = {Vienna, Austria},
   PAGES = {1069-1082},
   MONTH = apr,
   YEAR = 1988
}

@TECHREPORT{FankhauserNeuhold,
   AUTHOR = {P. Fankhauser and E. Neuhold},
   TITLE ="Knowledge Based Integration of Heterogenous Databases",
   INSTITUTION = "Technische Hochschule Darmstadt",
   YEAR = 1992
}

@TECHREPORT{ACeDB,
   AUTHOR = {J. Thierry-Mieg and R. Durbin},
   TITLE = "Syntactic definitions for the ACeDB Data Base Manager",
   INSTITUTION = "MRC Laboratory for Molecular Biology",
   NUMBER = "MRC-LMB xx.92",
   YEAR = 1992
}

@MISC{Buneman, 
   AUTHOR = {P. Buneman and S. Davidson and K. Hart and C. Overton},
   TITLE = "A data transformation system for biological data sources",
   NOTE = "To appear in VLDB 95"
}

@TECHREPORT{Huhnsetal,
   AUTHOR = {M. Huhns and others},
   TITLE = "Enterprise Information Modeling and Model Integration 
in {C}arnot",
   INSTITUTION = "MCC",
   NUMBER = {Carnot-128-92},
   YEAR = 1992
}

@INPROCEEDINGS{KrishnamurthyLitwinKent,
   AUTHOR = {R. Krishnamurthy and W. Litwin and W. Kent},
   TITLE = "Language Features for Interoperability of heterogeneous databases with schematic discrepancies.",
   BOOKTITLE = "Proc. ACM SIGMOD",
   ADDRESS = {Denver, CO},
   PAGES = {40-9},
   MONTH = may,
   YEAR = 1991
}

@BOOK{LDL,
   AUTHOR = {S. Naqvi and S. Tsur},
   TITLE = "A Logic Language for Data and Knowledge Bases",
   YEAR = 1988,
   PUBLISHER = "Computer Science Press"
}

@INPROCEEDINGS{KrishnamurthyIMS,
   AUTHOR = {R. Krishnamurthy and W. Litwin and W. Kent},
   TITLE = "Interoperability of heterogeneous databases with schematic discrepancies.",
   BOOKTITLE = "IMS Proc.",
   PAGES = {22-29},
   YEAR = 1991
}



@ARTICLE{David,
   AUTHOR = "M.M. David",
   TITLE = "Advanced capabilities of the outer join (SQL).",
   JOURNAL = "SIGMOD Record",
   VOLUME = 21,
   PAGES = {65-70},
   YEAR = 1992
}


@INPROCEEDINGS{SchollLaaschTresch,
   AUTHOR = {M.H.Scholl and C.Laasch and M.Tresch},
   TITLE = "Updatable views in object-oriented databases",
   BOOKTITLE = "Proc. DOOD",
   PAGES = {189-207},
   YEAR = 1991
}
 

@ARTICLE{Chakravarthyetal,
   AUTHOR = {S. Chakravarthy and Whan-Kyu Whang and S.B. Navathe},
   TITLE = "A logic-based approach to query processing in federated databases",
   JOURNAL = "Information Sciences",
   VOLUME = 79,
   PAGES = {1-28},
   YEAR = 1994
}


@INPROCEEDINGS{DavidSystem,
   AUTHOR = {B. Bhasker and C.J. Egyhazy and K.P. Triantis},
   TITLE = "The architecture of a heterogeneous distributed database management system: the Distributed Access View Integrated Database (DAVID).",
   BOOKTITLE = "1992 ACM Computer Science Conference. Communications Proceedings.",
   PAGES = {173-179},
   YEAR = 1992
}


@INPROCEEDINGS{ZeusSystem,
   AUTHOR = {Cheng-Huang Yen and L.L. Miller and S. Pakzad},
   TITLE = "The design and implementation of the Zeus View System",
   BOOKTITLE = "Proc Hawaii Intl Conf on System Sciences. Vol.II: Software Technology",
   PAGES = {206-215},
   YEAR = 1994
}


@ARTICLE{HammerMcLeod,
   AUTHOR = {J. Hammer and D. McLeod},
   TITLE = "An approach to resolving semantic heterogeneity in a federation of autonomous, heterogeneous database systems",
   JOURNAL = "Intl Journal of Intelligent and Cooperative information Systems",
   VOLUME = 2,
   PAGES = {51-83},
   YEAR = 1993
}


@ARTICLE{Wade,
   AUTHOR = {A.E. Wade},
   TITLE = "Single logical view over enterprise-wide distributed databases.",
   JOURNAL = "SIGMOD Record",
   VOLUME = 22,
   PAGES = {441-4},
   YEAR = 1993
}


@INPROCEEDINGS{de95,
    TITLE = "Object Exchange Across Heterogeneous Information Sources",
    AUTHOR = {Y. Papakonstantinou and H. Garcia-Molina and J. Widom},
    BOOKTITLE = "Proc. ICDE Conf.",
    PAGES = {251-60},
    YEAR = 1995
}

@MISC{Kelly,
    TITLE = "{TSIMMIS} UNION and JOIN Mediators Detailed Design
		  Specification",
    AUTHOR = {K.L. Ireland},
    NOTE = "Available by anonymous ftp at {\tt db.stanford.edu}
as the file {\tt /pub/ireland/mediator\_design.ps}."
}


@ARTICLE{Arensetal,
    TITLE = "Retrieving and Integrating Data from Multiple Information Sources.",
    AUTHOR = {Y. Arens and C.Y. Chee and C.-N. Hsu and C.A. Knoblock},
    JOURNAL = "Intl Journal of Intelligent and Cooperative 
Informations Systems",
    VOLUME = 2,
    PAGES = {127-58},
    YEAR = 1993,
    MONTH = Jun
}

 
@MISC{medmaker-extended,
    TITLE = "Object Fusion in Mediator Systems (extended version)",
    AUTHOR = {Y. Papakonstantinou and H. Garcia-Molina},
    NOTE = "Available by anonymous ftp at {\tt db.stanford.edu}
as the file {\tt /pub/papakonstantinou/1995/fusion-extended.ps}."
}

@INPROCEEDINGS{medmaker-no-oid,
    TITLE = "MedMaker: A Mediation System Based on Declarative Specifications",
    AUTHOR = {Y. Papakonstantinou and H. Garcia-Molina and J. Ullman},
    BOOKTITLE = "Proc. ICDE Conf.",
    PAGES = {132-41},
    YEAR = 1996
}

@INPROCEEDINGS{Chen,
    TITLE = "Outerjoin Optimization in Multidatabase Systems",
    AUTHOR = {A.L.P. Chen} ,
    BOOKTITLE = "Proc. Symposium on
Databases in Parallel and Distributed Systems",
    ADDRESS = {Los Alamitos, CA}, 
    PAGES = {211-8},
    MONTH = Jul,
    YEAR = 1990
}
    
@INPROCEEDINGS{LeeMoon,
    TITLE = "Heterogeneous Integration Method for Multidatabase
System",
    AUTHOR = {Y. Lee and S. Moon},
    BOOKTITLE = "Nineteenth EUROMICRO Symposium on Microprocessing
and Microprogramming",
    PAGES = {265-72},
    ADDRESS = {Barcelona, Spain},
    YEAR = 1993, 
    MONTH = Sep
}


@INPROCEEDINGS{SIGMODdemo,
    TITLE = "Information Translation, Mediation, and MOsaic-Based
Browsing in the {TSIMMIS} System",
    AUTHOR = {J. Hammer and others},
    BOOKTITLE = "Proc. ACM SIGMOD Conf.",
    PAGES = {483},
    MONTH = May,
    YEAR = 1995
} 


@ARTICLE{HiLog,
    TITLE = "Hilog: a Foundation for Higher-Order Logic Programming",
    AUTHOR = {W. Chen and M. Kifer and D.S. Warren},
    JOURNAL = "Journal of Logic Programming",
    VOLUME = 15,
    MONTH = Feb,
    YEAR = 1993,
    PAGES = {187-230}
}


@INPROCEEDINGS{F-Logic,
    TITLE = "F-logic: a Higher-Order Language for Reasoning about
Objects, Inheritance, and Scheme.",
    AUTHOR = {M. Kifer and G. Lausen},
    BOOKTITLE = "Proc. ACM SIGMOD Conf.",
    PAGES = {134-46},
    ADDRESS = {Portland, OR},
    MONTH = Jun,
    YEAR = 1989
}


@BOOK{PDKS1,
    TITLE = "Principles of Database and Knowledge-Base Systems,
Vol. I: Classical Database Systems", 
    AUTHOR = {J.D. Ullman},
    PUBLISHER = "Computer Science Press",
    ADDRESS = {New York, NY},
    YEAR = 1988
}


@BOOK{PDKS2,
    TITLE = "Principles of Database and Knowledge-Base Systems,
Vol. II: The New Technologies",
    AUTHOR = {J.D. Ullman},
    PUBLISHER = "Computer Science Press",
    ADDRESS = {New York, NY},
    YEAR = 1989
}


@INPROCEEDINGS{HullYoshikawa,
    TITLE = "{ILOG}: Declarative Creation and Manipulation 
of Object Identifiers",
    AUTHOR = {R. Hull and M. Yoshikawa},
    BOOKTITLE = "Proc. VLDB Conference",
    PAGES = {455-68},
    ADDRESS = {Brisbane, Australia},
    MONTH = Aug,
    YEAR = 1990
}


@INPROCEEDINGS{AbiteboulKanellakis,
     TITLE = "Object Identity as a Query Language Primitive",
     AUTHOR = {S. Abiteboul and P.C. Kanellakis},
     BOOKTITLE = "Proc. ACM SIGMOD Conference",
     PAGES = {159-73},
     ADDRESS = {Portland, OR},
     MONTH = May,
     YEAR = 1989
}


@MISC{WILLOW,
     TITLE = "{WILLOW}: Technical Overview.",
     AUTHOR = {M. Freedman},
     NOTE = "Available by anonymous ftp from
{\tt ftp.cac.washington.edu} as the file {\tt willow/Tech-Report.ps},
September 1994."
}


@TECHREPORT{GAIA,
    TITLE = "{GAIA} Technical Overview",
    AUTHOR = {R. Rao and B. Janssen and A. Rajaraman},
    INSTITUTION = "Xerox Palo Alto Research Center",
    YEAR = 1994
}

@INPROCEEDINGS{Garlic,
   TITLE = "Towards Heterogeneous Multimedia Information
Systems: The {G}arlic Approach",
   AUTHOR = {M.J. Carey and others},
   BOOKTITLE = "Proc. RIDE-DOM Workshop",
   PAGES = {124-31},
   YEAR = 1995
}

@INPROCEEDINGS{Rufus,
   TITLE = "The {R}ufus System: Information Organization for
Semistructured Data",
   AUTHOR = {K. Shoens and others},
   BOOKTITLE = "Proc. VLDB Conference",
   ADDRESS = {Dublin, Ireland},
   YEAR = 1993
}

@INPROCEEDINGS{Fangetal,
   TITLE = "The Design, Implementation, and Evaluation of an 
Object-Based Sharing Mechanism for Federated Database Systems",
   AUTHOR = {D. Fang and others},
   BOOKTITLE = "Proc. IEEE Conf. on Data Eng.",
   PAGES = {467-75},
   ADDRESS = {Vienna, Austria},
   MONTH = Apr,
   YEAR = 1993
}

@INPROCEEDINGS{Papyrus,
   TITLE = "The {P}apyrus Integrated Data Server",
   AUTHOR = {T. Conners and others},
   BOOKTITLE = "Proc. 1st PDIS Conference",
   ADDRESS = {Miami Beach, FL},
   MONTH = Dec,
   YEAR = 1991,
}

@INPROCEEDINGS{Rudensteiner,
   TITLE = "Multiview: A Methodology for Supporting Multiple
Views in Object-Oriented Databases",
   AUTHOR = {E. Rudensteiner},
   BOOKTITLE = "Proc. VLDB Conference",
   PAGES = {187-98},
   ADDRESS = {Vancouver, Canada},
   MONTH = Aug,
   YEAR = 1992
}

@INPROCEEDINGS{AbiteboulBonner,
   TITLE = "Objects and Views",
   AUTHOR = {S. Abiteboul and A. Bonner},
   BOOKTITLE = "Proc. ACM SIGMOD Conference",
   PAGES = {238-47},
   ADDRESS = {Denver, CO},
   MONTH = May,
   YEAR = 1991
}

@INPROCEEDINGS{O2QL,
   TITLE = "A Query Language for the $O_2$ Object-Oriented
Database System",
   AUTHOR = {F. Banchilhon and others},
   BOOKTITLE = "Proc. DBPL Conference",
   ADDRESS = {Salishan Lodge, OR},
   MONTH = Jun,
   YEAR = 1989
}

@INPROCEEDINGS{Breibartetal,
   TITLE = "Database Integration in a Distributed Heterogeneous 
Database System",
   AUTHOR = {Y.J. Breibart and others},
   BOOKTITLE = "Proc. 2nd Intl. IEEE Conf. on Data Engineering",
   ADDRESS = {Los Angeles, CA},
   MONTH = Feb,
   YEAR = 1986
}

@INPROCEEDINGS{DayalHwang,
   TITLE = "View Definition and Generalization for Database
Integration in a Multidatabase System",
   AUTHOR = {U. Dayal and H. Hwang},
   BOOKTITLE = "Proc. IEEE Workshop on Object-Oriented DBMS",
   ADDRESS = {Asilomar, CA},
   MONTH = Sep,
   YEAR = 1986
}

@INPROCEEDINGS{O-Logic,
   TITLE = "A Logic for Objects",
   AUTHOR = {D. Maier},
   BOOKTITLE = "Preprints of Workshop on Foundations of Deductive
Database and Logic Programming",
   EDITOR = {J. Minker},
   ADDRESS = {Washington, DC, USA},
   MONTH = Aug,
   YEAR = 1986
}

@INPROCEEDINGS{Duetal,
   TITLE = "Query Optimization in Heterogeneous {DBMS}",
   AUTHOR = {W. Du and R. Krishnamurthy and M.-C. Shan},
   BOOKTITLE = "Proc. VLDB Vonference",
   PAGES = {277-91},
   ADDRESS = {Vancouver, Canada},
   MONTH = Aug,
   YEAR = 1992
}

@INPROCEEDINGS{LuShan,
   TITLE = "On Global Query Optimization in Multidatabase Systems",
   AUTHOR = {H. Lu and M.-C. Shan},
   BOOKTITLE = "2nd Intl. Workshop on Research Issues on Data
Engineering: Transaction and Query Processing",
   PAGES = {217-27},
   ADDRESS = {Tempe, AZ},
   MONTH = Feb,
   YEAR = 1992
}

@INPROCEEDINGS{ZhuLarson,
   TITLE = "A Query Sampling Method for Estimating Local Cost
Parameters in a Multidatabase System",
   AUTHOR = {Q. Zhu and P.-A. Larson},
   BOOKTITLE = "Proc. IEEE Data Engineering Conf.",
   PAGES = {144-53},
   ADDRESS = {Houston, TX},
   MONTH = Feb,
   YEAR = 1994
}

@INPROCEEDINGS{LuGoh,
   TITLE = "Multidatabase Query Optimization: Issues and Solutions",
   AUTHOR = {H. Lu and B.-C. Ooi and C.-H. Goh},
   BOOKTITLE = "Proc. RIDE-IMS '93",
   PAGES = {137-43},
   ADDRESS = {Vienna, Austria},
   MONTH = Feb,
   YEAR = 1993
}

@ARTICLE{LOOM,
   TITLE = "{LOOM}: {Integrating} Multiple {AI} programming paradigms",
   AUTHOR = {R. MacGregor and J. Yen},
   JOURNAL = "Proc. Intl. Joint Conf. on Artificial Intelligence",
   MONTH = Aug,
   YEAR = 1989
}

@INPROCEEDINGS{amateur,
   TITLE = "An Amateur's Introduction to Recursive 
Query Processing Strategies",
   AUTHOR = {F. Bancilhon and R. Ramakrishnan},
   BOOKTITLE =  "Proc. ACM SIGMOD Conference",
   PAGES = {16-52},
   ADDRESS = {Washington, DC, USA},
   MONTH = May,
   YEAR = 1986
}
 

@MISC{LOREL,
   TITLE = "Querying Semistructured Heterogeneous Information",
   AUTHOR = {D. Quass and others},
   NOTE = "To appear in DOOD95. Available by anonymous ftp at {\tt db.stanford.edu} as the 
file {\tt /pub/quass/1994/querying-submit.ps}."
}



@TECHREPORT{KL1,
   TITLE = "An Overview of {NIKL}, the New Implementation of {KL-ONE}",
   AUTHOR = {M.G. Moser},
   BOOKTITLE = "Research in Natural Lagiage Understanding",
   INSTITUTION = "Bolt, Beranek, and Newman, Inc. Cambridge, MA",
   NUMBER = 5421,
   YEAR = 1983
}

@TECHREPORT{KIF,
   TITLE = "{K}nowledge {I}nterchange {F}ormat. {V}ersion 3.0. {R}eference
		  {M}anual",
   AUTHOR = {M.R. Genesereth and others},
   INSTITUTION = "Stanford University",
   NUMBER = "Logic-92-1",
   YEAR = 1992,
   NOTE = "Also available by URL {\tt http://logic.stanford.edu/kif.html}."
}

@ARTICLE{Amalgam,
   TITLE = "Amalgame: a tool for creating interoperating persistent, heterogeneous components",
   AUTHOR = {J.C. Franchitti and R. King},
   JOURNAL =  "Advanced Database Systems",
   YEAR = 1993,
   PAGES = {313-36}
}

@Inproceedings{AbiteboulKanellakis89,
        Author = "S. Abiteboul and P. C. Kanellakis",
        title = "Object Identity as a Query Language Primitive",
        booktitle =  sigmod,
        pages = "159--173",
        year = "1989",
        note = "to appear in {\em J. ACM}" }

@Inproceedings{AbiteboulCluetMilo,
        Author = "S. Abiteboul and S. Cluet and T. Milo",
        title =  "Querying and Updating the File",
        booktitle = "Proc. VLDB",
        year = "1993"  }

@Inproceedings{AbiteboulSouzaDelobel,
        Author = "C. Souza and S. Abiteboul and C. Delobel",
        title =  "Virtual Schemas and Bases",
        booktitle = "Proc. EDBT, Cambridge",
        year = "1994"  }


@Inproceedings{CACS94,
        Author = "V. Christophides and S. Abiteboul and S. Cluet and M. Scholl",
        title =  "From Structured Documents to Novel Query Facilities",
        booktitle = "Proc. ACM Sigmod, Minneapolis",
        year = "1994"  }

@TECHREPORT{QueryFolding,
        Author={Xiaolei Qian},
        title="Query Folding",
        institution="SRI",
        number="CSL-95-09",
        year=1992
}

@INPROCEEDINGS{LakshmananSadriSubramanian,
  TITLE="On The Logical Foundations of Schema Integration and Evolution in Heterogeneous Datbase Systems",
  AUTHOR={L. Lakshmanan and F. Sadri and I.N. Subramanian},
  BOOKTITLE="Proc. DOOD",
  YEAR=1993,
  PAGES={81-100}
} 

@MISC{HERMES,
  TITLE="{HERMES}: {A} heterogeneous reasoning and mediator system",
  AUTHOR={V.S. Subrahmanian and others},
  NOTE="http://www.cs.umd.edu/projects/hermes/overview/paper"
}

@INPROCEEDINGS{hermes-sigmod,
  TITLE="Query Caching and Optimization in Distributed Mediator Systems",
  AUTHOR={S. Adali and S. C. Candan and Y. Papakonstantinou and V. S. Subrahmanian},
  BOOKTITLE="Proc. SIGMOD",
  PAGES={137-48},
  YEAR=1996
}

@TECHREPORT{DISCO,
  TITLE="Scaling Heterogeneous Databases and the Design of {DISCO}",
  AUTHOR={A. Tomasic and L. Raschid and P. Valduriez},
  INSTITUTION="INRIA",
  YEAR=1995
}

@INPROCEEDINGS{ManninoEffefsberg,
  TITLE="Matching Techniques in Global Schema Design",
  AUTHOR={M.V. Mannino and M.V. Effelsberg},
  BOOKTITLE="Proc. IEEE COMPDEC",
  YEAR=1984,
  PAGES={418-25}
}

@INPROCEEDINGS{EickLockeman,
  TITLE="Acquisition of Terminological Knowledge Using Database Design Techniques",
  AUTHOR={C.F. Eick and P.C. Lockemann},
  BOOKTITLE="Proc. SIGMOD",
  YEAR=1985,
  PAGES={84-94}
}


@MISC{CGI,
  TITLE="{PACBASE}",
  AUTHOR="CGI Systems Inc.",
  NOTE="One Blue Hill Plaza, P.O.Box 1645, Pearl River, NY 10965"
}


@MISC{Dat,
  TITLE="Integration {W}orks",
  AUTHOR="Data Integration Solutions, Corp.",
  NOTE="18726 S. Western Avenue, Suite 405, Gardena, CA 90248"
}


@INPROCEEDINGS{BunemanSusan,
  TITLE="A Data Transformation System for Biological Data Sources",
  AUTHOR={P. Buneman and S. Davidson and K. Hart and C. Overton and L. Wong},
  BOOKTITLE="Proc. VLDB",
  YEAR=1995
}


@INPROCEEDINGS{BunemanDavidsonSuciu,
  TITLE="Programming Constructs for Unstructured Data",
  AUTHOR={P.Buneman and S. Davidson and D. Suciu},
  BOOKTITLE="Proc. DBPL",
  YEAR=1995
}


@INPROCEEDINGS{QueryTranslation,
  TITLE="A Query Translation Scheme for the Rapid Implementation of Wrappers",
  AUTHOR={Y. Papakonstantinou and A. Gupta and H. Garcia-Molina and J. Ullman},
  BOOKTITLE="Proc. DOOD Conf.",
  PAGES={161-86},
  YEAR=1995
}


@INPROCEEDINGSS{LMSS,
   AUTHOR = {A. Levy and A. Mendelzon and Y. Sagiv and D. Srivastava},
   TITLE =  "Answering queries using views",
   BOOKTITLE = "Proc. PODS Conf.",
   PAGES = {95-104},
   YEAR = 1995
}

@INPROCEEDINGS{LY,
   AUTHOR = {P.A. Larson and H.Z. Yang},
   TITLE =  "Computing queries from derived relations",
   BOOKTITLE = "Proc. VLDB Conf.",
   PAGES = {259-69},
   YEAR = 1985
}

@INPROCEEDINGS{RSU,
   AUTHOR = { A. Rajaraman and Y. Sagiv and J. Ullman},
   TITLE = "Answering queries using templates with binding patterns",
   BOOKTITLE = "Proc. PODS Conf.",
   PAGES = {105-112},
   YEAR = 1995
}

@MISC{nonexistent,
   TITLE="Capabilities-Based Query Rewriting in Mediator Systems",
   AUTHOR={Y. Papakonstantinou and A. Gupta and L. Haas},
   NOTE="Available via ftp at {\tt db.stanford.edu} file {\tt ~/pub/papakonstantinou/1995/cbr-extended.ps}"
}

@MISC{InfoManifold,
   TITLE="Query Processing in the Information Manifold",
   AUTHOR={A. Levy and A. Rajaraman and J. Ordille},
   MISC="To appear in VLDB 96"
}

@INPROCEEDINGS{MillerIoannidisRamakrishnan,
   TITLE=" Schema equivalence in heterogeneous systems: bridging theory and practice",
   AUTHOR={R. Miller and Y. Ioannidis and R. Ramakrishnan},
   BOOKTITLE="Proc. EDBT",
   PAGES={73-80},
   YEAR=1994
}

@INPROCEEDINGS{MillerIoannidis, 
   TITLE="The use of information capacity in schema integration and translation",
   AUTHOR={R. Miller and Y. Ioannidis},
   BOOKTITLE="Proc. VLDB",
   PAGES={120-33},
   YEAR=1993
}

@INPROCEEDINGS{LRU,
   TITLE="Answering Queries Using Limited External Processors",
   AUTHOR={A. Levy and A. Rajaraman and J. Ullman},
   BOOKTITLE="Proc. PODS",
   PAGES={227-37},
   YEAR=1996
}

@MISC{PESTO,
   TITLE="{PESTO}:{A}n Integrated Query/Browser for Object Databases",
   AUTHOR={M. Carey and L. Haas and V. Maganty and J. Williams},
   NOTE="To appear in VLDB 96. Available at {\tt http://www.almaden.ibm.com/cs/garlic/pesto\_vldb96.html}"
}