Joachim Biskup

According to our database, Joachim Biskup authored at least 167 papers between 1973 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

Relational Schemas with Multiplicity Bounds, Diversity Bounds and Functional Dependencies.

Joachim Biskup

Proceedings of the Foundations of Information and Knowledge Systems, 2024

2022

Uniform probabilistic generation of relation instances satisfying a functional dependency.

Maximilian Berens, Joachim Biskup, Marcel Preuß

Inf. Syst., 2022

On Sampling Representatives of Relational Schemas with a Functional Dependency.

Maximilian Berens, Joachim Biskup

Proceedings of the Foundations of Information and Knowledge Systems, 2022

Keynote: Construction of Inference-Proof Agent Interactions.

Joachim Biskup

Proceedings of the Machine Learning under Resource Constraints - Volume 3: Applications, 2022

2020

Inference-Proof Monotonic Query Evaluation and View Generation Reconsidered.

Joachim Biskup

Proceedings of the Data and Applications Security and Privacy XXXIV, 2020

Can We Probabilistically Generate Uniformly Distributed Relation Instances Efficiently?

Joachim Biskup, Marcel Preuß

Proceedings of the Advances in Databases and Information Systems, 2020

2019

Publishing inference-proof relational data: An implementation and experiments.

Joachim Biskup, Christine Dahn, Katharina Diekmann, Ralf Menzel, Dirk Schalge, Lena Wiese

Data Knowl. Eng., 2019

Checking inference-proofness of attribute-disjoint and duplicate-preserving fragmentations.

Joachim Biskup, Marcel Preuß

Ann. Math. Artif. Intell., 2019

2018

Inferences from Attribute-Disjoint and Duplicate-Preserving Relational Fragmentations.

Joachim Biskup, Marcel Preuß

Proceedings of the Foundations of Information and Knowledge Systems, 2018

2017

Inference control of open relational queries under closed-world semantics based on theorem proving.

Joachim Biskup, Martin Bring, Michael Bulinski

Inf. Syst., 2017

Confidentiality enforcement by hybrid control of information flows.

Joachim Biskup, Cornelia Tadros, Jaouad Zarouali

CoRR, 2017

Inference-proof Data Filtering for a Probabilistic Setting.

Joachim Biskup, Piero A. Bonatti, Clemente Galdi, Luigi Sauro

Proceedings of the 5th Workshop on Society, 2017

Inference-Proof Updating of a Weakened View Under the Modification of Input Parameters.

Joachim Biskup, Marcel Preuß

Proceedings of the Computer Security - ESORICS 2017, 2017

2016

Selected Results and Related Issues of Confidentiality-Preserving Controlled Interaction Execution.

Joachim Biskup

Proceedings of the Foundations of Information and Knowledge Systems, 2016

Information Control by Policy-Based Relational Weakening Templates.

Joachim Biskup, Marcel Preuß

Proceedings of the Computer Security - ESORICS 2016, 2016

Controlled Management of Confidentiality-Preserving Relational Interactions.

Joachim Biskup, Ralf Menzel, Jaouad Zarouali

Proceedings of the Data Privacy Management and Security Assurance, 2016

On the Simulation Assumption for Controlled Interaction Processing.

Joachim Biskup, Cornelia Tadros

Proceedings of the Computational Models of Rationality, 2016

2015

Preserving confidentiality while reacting on iterated queries and belief revisions.

Joachim Biskup, Cornelia Tadros

Ann. Math. Artif. Intell., 2015

Constructing Inference-Proof Belief Mediators.

Joachim Biskup, Cornelia Tadros

Proceedings of the Data and Applications Security and Privacy XXIX, 2015

Confidentiality Preserving Evaluation of Open Relational Queries.

Joachim Biskup, Martin Bring, Michael Bulinski

Proceedings of the Advances in Databases and Information Systems, 2015

2014

Inference-Proof Data Publishing by Minimally Weakening a Database Instance.

Joachim Biskup, Marcel Preuß

Proceedings of the Information Systems Security - 10th International Conference, 2014

Reasoning on Secrecy Constraints under Uncertainty to Classify Possible Actions.

Joachim Biskup, Gabriele Kern-Isberner, Patrick Krümpelmann, Cornelia Tadros

Proceedings of the Foundations of Information and Knowledge Systems, 2014

Idea: Towards a Vision of Engineering Controlled Interaction Execution for Information Services.

Joachim Biskup, Cornelia Tadros

Proceedings of the Engineering Secure Software and Systems - 6th International Symposium, 2014

Optimality and Complexity of Inference-Proof Data Filtering and CQE.

Joachim Biskup, Piero A. Bonatti, Clemente Galdi, Luigi Sauro

Proceedings of the Computer Security - ESORICS 2014, 2014

2013

On Inference-Proof View Processing of XML Documents.

Joachim Biskup, Lan Li

IEEE Trans. Dependable Secur. Comput., 2013

Privacy through Uncertainty in Location-Based Services.

Shawn Merrill, Nilgun Basalp, Joachim Biskup, Erik Buchmann, Chris Clifton, Bart Kuijpers, Walied Othman, Erkay Savas

Proceedings of the 2013 IEEE 14th International Conference on Mobile Data Management, Milan, Italy, June 3-6, 2013, 2013

Logic-Oriented Confidentiality Policies for Controlled Interaction Execution.

Joachim Biskup

Proceedings of the Databases in Networked Information Systems - 8th International Workshop, 2013

Database Fragmentation with Encryption: Under Which Semantic Constraints and A Priori Knowledge Can Two Keep a Secret?

Joachim Biskup, Marcel Preuß

Proceedings of the Data and Applications Security and Privacy XXVII, 2013

2012

Dynamic policy adaptation for inference control of queries to a propositional information system.

Joachim Biskup

J. Comput. Secur., 2012

Inference-usability confinement by maintaining inference-proof views of an information system.

Joachim Biskup

Int. J. Comput. Sci. Eng., 2012

Probabilistic Conditional Independence under Schema Certainty and Uncertainty.

Joachim Biskup, Sven Hartmann, Sebastian Link

Proceedings of the Scalable Uncertainty Management - 6th International Conference, 2012

Revising Belief without Revealing Secrets.

Joachim Biskup, Cornelia Tadros

Proceedings of the Foundations of Information and Knowledge Systems, 2012

Signature-Based Inference-Usability Confinement for Relational Databases under Functional and Join Dependencies.

Joachim Biskup, Sven Hartmann, Sebastian Link, Jan-Hendrik Lochner, Torsten Schlotmann

Proceedings of the Data and Applications Security and Privacy XXVI, 2012

Some Remarks on Relational Database Schemes Having Few Minimal Keys.

Joachim Biskup

Proceedings of the Conceptual Modelling and Its Theoretical Foundations, 2012

2011

Inference Control.

Joachim Biskup

Proceedings of the Encyclopedia of Cryptography and Security, 2nd Ed., 2011

A sound and complete model-generation procedure for consistent and confidentiality-preserving databases.

Joachim Biskup, Lena Wiese

Theor. Comput. Sci., 2011

Inference-proof view update transactions with forwarded refreshments.

Joachim Biskup, Christian Gogolin, Jens Seiler, Torben Weibert

J. Comput. Secur., 2011

Appropriate inferences of data dependencies in relational databases.

Joachim Biskup, Sebastian Link

Ann. Math. Artif. Intell., 2011

On the Inference-Proofness of Database Fragmentation Satisfying Confidentiality Constraints.

Joachim Biskup, Marcel Preuß, Lena Wiese

Proceedings of the Information Security, 14th International Conference, 2011

Inference-Proof View Update Transactions with Minimal Refusals.

Joachim Biskup, Cornelia Tadros

Proceedings of the Data Privacy Management and Autonomous Spontaneus Security, 2011

History-Dependent Inference Control of Queries by Dynamic Policy Adaption.

Joachim Biskup

Proceedings of the Data and Applications Security and Privacy XXV, 2011

2010

Editorial ESORICS 2007.

Joachim Biskup, Javier López

ACM Trans. Inf. Syst. Secur., 2010

Policy-Based Secrecy in the Runs & Systems Framework and Controlled Query Evaluation.

Joachim Biskup, Cornelia Tadros

Proceedings of the Advances in Information and Computer Security, 2010

Towards Controlled Query Evaluation for Incomplete First-Order Databases.

Joachim Biskup, Cornelia Tadros, Lena Wiese

Proceedings of the Foundations of Information and Knowledge Systems, 2010

Usability Confinement of Server Reactions: Maintaining Inference-Proof Client Views by Controlled Interaction Execution.

Joachim Biskup

Proceedings of the Databases in Networked Information Systems, 6th International Workshop, 2010

Efficient Inference Control for Open Relational Queries.

Joachim Biskup, Sven Hartmann, Sebastian Link, Jan-Hendrik Lochner

Proceedings of the Data and Applications Security and Privacy XXIV, 2010

Chasing after Secrets in Relational Databases.

Joachim Biskup, Sven Hartmann, Sebastian Link, Jan-Hendrik Lochner

Proceedings of the 4th Alberto Mendelzon International Workshop on Foundations of Data Management, 2010

2009

Optimization of the Controlled Evaluation of Closed Relational Queries.

Joachim Biskup, Jan-Hendrik Lochner, Sebastian Sonntag

Proceedings of the Emerging Challenges for Security, 2009

Combining Consistency and Confidentiality Requirements in First-Order Databases.

Joachim Biskup, Lena Wiese

Proceedings of the Information Security, 12th International Conference, 2009

Requirements and Protocols for Inference-Proof Interactions in Information Systems.

Joachim Biskup, Christian Gogolin, Jens Seiler, Torben Weibert

Proceedings of the Computer Security, 2009

Controlled Query Evaluation and Inference-Free View Updates.

Joachim Biskup, Jens Seiler, Torben Weibert

Proceedings of the Data and Applications Security XXIII, 2009

Towards Early Warning Systems - Challenges, Technologies and Architecture.

Martin Apel, Joachim Biskup, Ulrich Flegel, Michael Meier

Proceedings of the Critical Information Infrastructures Security, 2009

Security in Computing Systems - Challenges, Approaches and Solutions.

Joachim Biskup

Springer, ISBN: 978-3-540-78441-8, 2009

2008

Preprocessing for controlled query evaluation with availability policy.

Joachim Biskup, Lena Wiese

J. Comput. Secur., 2008

Reducing inference control to access control for normalized database schemas.

Joachim Biskup, David W. Embley, Jan-Hendrik Lochner

Inf. Process. Lett., 2008

Keeping secrets in incomplete databases.

Joachim Biskup, Torben Weibert

Int. J. Inf. Sec., 2008

Appropriate Reasoning about Data Dependencies in Fixed and Undetermined Universes.

Joachim Biskup, Sebastian Link

Proceedings of the Foundations of Information and Knowledge Systems, 2008

08102 Working Group -- Early Warning Systems.

Joachim Biskup, Bernhard M. Hämmerli, Michael Meier, Sebastian Schmerl, Jens Tölle, Michael Vogel

Proceedings of the Perspectives Workshop: Network Attack Detection and Defense, 2.3., 2008

2007

A Trust- and Property-based Access Control Model.

Joachim Biskup, Julia Hielscher, Sandra Wortmann

Proceedings of the 3rd International Workshop on Security and Trust Management, 2007

Controlled query evaluation with open queries for a decidable relational submodel.

Joachim Biskup, Piero A. Bonatti

Ann. Math. Artif. Intell., 2007

Enforcing Confidentiality in Relational Databases by Reducing Inference Control to Access Control.

Joachim Biskup, Jan-Hendrik Lochner

Proceedings of the Information Security, 10th International Conference, 2007

Towards Secure Execution Orders for CompositeWeb Services.

Joachim Biskup, Barbara Carminati, Elena Ferrari, Frank Müller, Sandra Wortmann

Proceedings of the 2007 IEEE International Conference on Web Services (ICWS 2007), 2007

Inference Control in Logic Databases as a Constraint Satisfaction Problem.

Joachim Biskup, Dominique Marc Burgard, Torben Weibert, Lena Wiese

Proceedings of the Information Systems Security, Third International Conference, 2007

Secure Mediation of Join Queries by Processing Ciphertexts.

Joachim Biskup, Christian Tsatedem, Lena Wiese

Proceedings of the 23rd International Conference on Data Engineering Workshops, 2007

Building a Tool for Cost-Based Design of Object-Oriented Database Schemas.

Joachim Biskup, Ralf Menzel

Proceedings of the Conceptual Modeling, 2007

Confidentiality Policies for Controlled Query Evaluation.

Joachim Biskup, Torben Weibert

Proceedings of the Data and Applications Security XXI, 2007

2006

Optimistic Anonymous Participation in Inter-organizational Workflow Instances.

Joachim Biskup, Joerg Parthe

Proceedings of the Information Systems Security, Second International Conference, 2006

Requirements of Information Reductions for Cooperating Intrusion Detection Agents.

Ulrich Flegel, Joachim Biskup

Proceedings of the Emerging Trends in Information and Communication Security, 2006

Optimising Abstract Object-Oriented Database Schemas.

Joachim Biskup, Ralf Menzel

Proceedings of the Conceptual Modeling, 2006

On Finding an Inference-Proof Complete Database for Controlled Query Evaluation.

Joachim Biskup, Lena Wiese

Proceedings of the Data and Applications Security XX, 2006

2005

Secure Mediation with Mobile Code.

Joachim Biskup, Barbara Sprick, Lena Wiese

Proceedings of the Data and Applications Security XIX, 2005

2004

Solving Equations in the Relational Algebra.

Joachim Biskup, Jan Paredaens, Thomas Schwentick, Jan Van den Bussche

SIAM J. Comput., 2004

Controlled query evaluation for enforcing confidentiality in complete information systems.

Joachim Biskup, Piero A. Bonatti

Int. J. Inf. Sec., 2004

Controlled Query Evaluation for Known Policies by Combining Lying and Refusal.

Joachim Biskup, Piero A. Bonatti

Ann. Math. Artif. Intell., 2004

Towards a credential-based implementation of compound access control policies.

Joachim Biskup, Sandra Wortmann

Proceedings of the 9th ACM Symposium on Access Control Models and Technologies, 2004

Refusal in Incomplete Databases.

Joachim Biskup, Torben Weibert

Proceedings of the Research Directions in Data and Applications Security XVIII, 2004

2003

Secure Mediation: Requirements, Design, and Architecture.

Christian Altenschmidt, Joachim Biskup, Ulrich Flegel, Yücel Karabulut

J. Comput. Secur., 2003

Extracting information from heterogeneous information sources using ontologically specified target views.

Joachim Biskup, David W. Embley

Inf. Syst., 2003

Adding inclusion dependencies to an object-oriented data model with uniqueness constraints.

Joachim Biskup, Torsten Polle

Acta Informatica, 2003

Administration Rights in the SDSD-System.

Joachim Biskup, Thomas Leineweber, Joerg Parthe

Proceedings of the Data and Applications Security XVII: Status and Prospects, 2003

2002

Ausgleich von Datenschutz und Überwachung mit technischer Zweckbindung am Beispiel eines Pseudonymisierers.

Joachim Biskup, Ulrich Flegel

Proceedings of the 32. Jahrestagung der Gesellschaft für Informatik, Informatik bewegt, INFORMATIK 2002, Dortmund, Germany, September 30, 2002

Credential-basierte Zugriffskontrolle: Wurzeln und ein Ausblick.

Joachim Biskup

Proceedings of the 32. Jahrestagung der Gesellschaft für Informatik, Informatik bewegt, INFORMATIK 2002, Dortmund, Germany, September 30, 2002

Confidentiality Policies and Their Enforcement for Controlled Query Evaluation.

Joachim Biskup, Piero A. Bonatti

Proceedings of the Computer Security, 2002

A Flexible Cost Model for Abstract Object-Oriented Database Schemas.

Joachim Biskup, Ralf Menzel

Proceedings of the Conceptual Modeling, 2002

Explicit Representation of Constrained Schema Mappings for Mediated Data Integration.

Christian Altenschmidt, Joachim Biskup

Proceedings of the Databases in Networked Information Systems, 2002

A Hybrid PKI Model: Application to Secure Mediation.

Joachim Biskup, Yücel Karabulut

Proceedings of the Research Directions in Data and Applications Security, 2002

2001

Lying versus refusal for known potential secrets.

Joachim Biskup, Piero A. Bonatti

Data Knowl. Eng., 2001

Decomposition of object-oriented database schemas.

Joachim Biskup, Torsten Polle

Ann. Math. Artif. Intell., 2001

Towards Unifying Semantic Constraints and Security Constraints in Distributed Information Systems.

Joachim Biskup, Barbara Sprick

Proceedings of the Semantics in Databases, 2001

State-Dependent Security Decisions for Distributed Object-Systems.

Joachim Biskup, Thomas Leineweber

Proceedings of the Database and Application Security XV, 2001

An Abstract Database Machine for Cost Driven Design of Object-Oriented Database Schemas.

Joachim Biskup, Ralf Menzel

Proceedings of the Advances in Databases and Information Systems, 2001

2000

Sync Classes: A Framework for Optimal Scheduling of Requests in Multimedia Storage Servers.

Leana Golubchik, V. S. Subrahmanian, Sherry Marcus, Joachim Biskup

IEEE Trans. Knowl. Data Eng., 2000

For unknown secrecies refusal is better than lying.

Joachim Biskup

Data Knowl. Eng., 2000

Transaction-Based Pseudonyms in Audit Data for Privacy Respecting Intrusion Detection.

Joachim Biskup, Ulrich Flegel

Proceedings of the Recent Advances in Intrusion Detection, Third International Workshop, 2000

Mediated Information Gain.

Joachim Biskup, David W. Embley

Proceedings of the 2000 International Database Engineering and Applications Symposium, 2000

Decomposition of Database Classes under Path Functional Dependencies and Onto Constraints.

Joachim Biskup, Torsten Polle

Proceedings of the Foundations of Information and Knowledge Systems, 2000

On Pseudonymization of Audit Data for Intrusion Detection.

Joachim Biskup, Ulrich Flegel

Proceedings of the Designing Privacy Enhancing Technologies, 2000

Panel.

Reind P. van de Riet, Raban Serban, Sylvia L. Osborn, Arnon Rosenthal, Vijayalakshmi Atluri, Joachim Biskup, Gio Wiederhold

Proceedings of the Data and Application Security, 2000

Security Architecture of the Multimedia Mediator.

Christian Altenschmidt, Joachim Biskup, Yücel Karabulut

Proceedings of the Data and Application Security, 2000

Threshold-based identity recovery for privacy enhanced applications.

Joachim Biskup, Ulrich Flegel

Proceedings of the CCS 2000, 2000

1999

Ein Kostenmodell für abstrakte objektorientierte Datenbankschemas.

Joachim Biskup, Ralf Menzel, Torsten Polle

Proceedings of the 11. Workshop Grundlagen von Datenbanken, 1999

Selbstbestimmte technische Durchsetzung informationeller Zusicherungen.

Joachim Biskup

Proceedings of the Angewandte Mathematik, 1999

1998

Weakly Constraining Multimedia Types Based on a Type Embedding Ordering.

Christian Altenschmidt, Joachim Biskup, Jürgen Freitag, Barbara Sprick

Proceedings of the Advances in Multimedia Information Systems, 4th International Workshop, 1998

An Integrated Approach to Semantic Evaluation and Content-Based Retrieval of Multimedia Documents.

Alois C. Knoll, Christian Altenschmidt, Joachim Biskup, Hans-Martin Blüthgen, Ingo Glöckner, Sven Hartrumpf, Hermann Helbig, Christiane Henning, Reinhard Lüling, Burkhard Monien, Thomas Noll, Norbert Sensen

Proceedings of the Research and Advanced Technology for Digital Libraries, 1998

Secure Mediation: Requirements and Design.

Joachim Biskup, Ulrich Flegel, Yücel Karabulut

Proceedings of the Database Security XII: Status and Prospects, 1998

Technical Enforcement of Informational Assurances.

Joachim Biskup

Proceedings of the Database Security XII: Status and Prospects, 1998

1997

Query Evaluation in an Object-Oriented Multimedia Mediator.

Joachim Biskup, Jürgen Freitag, Yücel Karabulut, Barbara Sprick

Proceedings of the 1997 International Conference on Object Oriented Information Systems, 1997

A New Approach to Inferences of Semantic Constraints.

Joachim Biskup, Andreas Kluck

Proceedings of the First East-European Symposium on Advances in Databases and Information Systems (ADBIS'97), 1997

1996

Decomposition of Relationships through Pivoting.

Joachim Biskup, Ralf Menzel, Torsten Polle, Yehoshua Sagiv

Proceedings of the Conceptual Modeling, 1996

1995

Optimization of a Subclass of Conjunctive Queries.

Joachim Biskup, Pratul Dublish, Yehoshua Sagiv

Acta Informatica, 1995

Achievements of Relational Database Schema Design Theory Revisited.

Joachim Biskup

Proceedings of the Semantics in Databases, 1995

Database Schema Design Theory : Achievements and Challenges.

Joachim Biskup

Proceedings of the Information Systems and Data Management, 1995

Transforming an Entity-Relationship Schema into Object-Oriented Database Schemas.

Joachim Biskup, Ralf Menzel, Torsten Polle

Proceedings of the Advances in Databases and Information Systems, 1995

Grundlagen von Informationssystemen

Joachim Biskup

Vieweg, ISBN: 3-528-05494-8, 1995

1994

Reflections on Security of Database and Datatransfer Systems in Health Care.

Joachim Biskup, Gerrit Bleumer

Proceedings of the Applications and Impacts, Information Processing '94, Volume 2, Proceedings of the IFIP 13th World Computer Congress, Hamburg, Germany, 28 August, 1994

Impacts of Creating, Implementing and Using Formal Languages.

Joachim Biskup

Proceedings of the Linkage and Developing Countries, Information Processing '94, Volume 3, Proceedings of the IFIP 13th World Computer Congress, Hamburg, Germany, 28 August, 1994

Transformation von Entity-Relationship-Schemata in objektorientierte Datenbankschemata.

Joachim Biskup, Ralf Menzel, Torsten Polle

Proceedings of the Kurzfassungen 6. Workshop Grundlagen von Datenbanken, 1994

Schematransformation für F-Logik.

Joachim Biskup, Ralf Menzel, Torsten Polle

Proceedings of the Kurzfassungen 6. Workshop Grundlagen von Datenbanken, 1994

Ein Mechanismus zur Durchsetzung von Sicherheitsspezifikationen.

Joachim Biskup, Christian Eckert

Proceedings of the Kurzfassungen 6. Workshop Grundlagen von Datenbanken, 1994

Perspectives on Database Security - Panel Summary.

Matthew Morgenstern, Joachim Biskup, Klaus R. Dittrich, Carl E. Landwehr, Marvin Schaefer

Proceedings of the Database Security, 1994

Enforcement of State Dependent Security Specifications.

Joachim Biskup, Christian Eckert

Proceedings of the Database Security, 1994

1993

Objects in Relational Database Schemes with Functional Inclusion, and Exclusion Dependencies.

Joachim Biskup, Pratul Dublish

RAIRO Theor. Informatics Appl., 1993

Sichere Delegation in Informationssystemen.

Joachim Biskup, Christian Eckert

Proceedings of the Verläßliche Informationssysteme, 1993

Sicherheit von IT-Systemen als "sogar wenn - sonst nichts - Eigenschaft".

Joachim Biskup

Proceedings of the Verläßliche Informationssysteme, 1993

Magic-Sets: Globalisieren von Variablen und Rekursionselimination.

Joachim Biskup, Torsten Polle

Proceedings of the Tagung des Arbeitskreises der GI Datenbanken: Grundlagen von Informationssystemen, 1993

Über die Durchsetzung von zustandsabhängigen Sicherheitsspezifikationen.

Joachim Biskup, Christian Eckert

Proceedings of the Tagung des Arbeitskreises der GI Datenbanken: Grundlagen von Informationssystemen, 1993

Evaluation of Upper Bounds and Least Nodes as Database Operations.

Joachim Biskup, Holger Stiefeling

Proceedings of the Foundations of Data Organization and Algorithms, 1993

About the Enforcement of State Dependent Specifications.

Joachim Biskup, Christian Eckert

Proceedings of the Database Security, 1993

1991

Relationship chase procedures interpreted as resolution with paramodulation.

Joachim Biskup

Fundam. Informaticae, 1991

On Relational Database Schemes Having Unique Minimal Key.

Joachim Biskup, János Demetrovics, Leonid Libkin, Ilya B. Muchnik

J. Inf. Process. Cybern., 1991

Das datenschutzorientierte Informationssystem DORIS: Stand der Entwicklung und Ausblick.

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the VIS'91, 1991

Sicherheit in Informationssystemen - Gewährleistung und Begrenzung des Informationsflusses.

Joachim Biskup

Proceedings of the VIS'91, 1991

Sicherheit: Gewährleistung und Begrenzung des Informationsflusses.

Joachim Biskup

Proceedings of the Entwicklungstendenzen bei Datenbanksystemen., 1991

1990

An Extension of SQL for Querying Graph Relations.

Joachim Biskup, Uwe Räsch, Holger Stiefeling

Comput. Lang., 1990

Optimizatioin of a Subclass of Conjunctive Queries.

Pratul Dublish, Joachim Biskup, Yehoshua Sagiv

Proceedings of the ICDT'90, 1990

A General Framework for Database Security.

Joachim Biskup

Proceedings of the Kurzfassungen des 2. Workshops "Grundlagen von Datenbanken", 1990

Medical Database Security.

Joachim Biskup

Proceedings of the GI, 1990

A General Framework for Database Security (Abstract).

Joachim Biskup

Proceedings of the Database Security, 1990

1989

Boyce-Codd Normal Form and Object Normal Forms.

Joachim Biskup

Inf. Process. Lett., 1989

Verantwortung des Hochschullehrers für Informatik - Zur Diskussion gestellt.

Joachim Biskup

Inform. Spektrum, 1989

Towards a Schema Design Methodology for Deductive Databases.

Joachim Biskup, Bernhard Convent

Proceedings of the MFDBS 89, 1989

The Personal Model of Data - Towards a Privacy Oriented Information System (Extended Abstract).

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the Fifth International Conference on Data Engineering, 1989

An Object-Surrogate-Value Approach for Database Languages.

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the Workshop on Foundations of Models and Languages for Data and Objects, 1989

Protection of Privacy and Confidentiality in Medical Information Systems: Problems and Guidelines.

Joachim Biskup

Proceedings of the Database Security, 1989

1988

The personal model of data: Towards a privacy-oriented information system.

Joachim Biskup, Hans Hermann Brüggemann

Comput. Secur., 1988

Transitive Closure Algorithms for Very Large Databases.

Joachim Biskup, Holger Stiefeling

Proceedings of the Graph-Theoretic Concepts in Computer Science, 1988

Analysis of the Privacy Model for the Information System DORIS.

Joachim Biskup, Hans-Werner Graf

Proceedings of the Database Security, 1988

1987

Design of Relational Database Schemes by Deleting Attributes in the Canonical Decomposition.

Joachim Biskup, Renate Meyer

J. Comput. Syst. Sci., 1987

The Equivalence Problem For Relational Database Schemes.

Joachim Biskup, Uwe Räsch

Proceedings of the MFDBS 87, 1987

Data Manipulation Languages for the Universal Relation View DURST.

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the MFDBS 87, 1987

Privacy Respecting Permissions and Rights.

Joachim Biskup

Proceedings of the Database Security: Status and Prospects. Results of the IFIP WG 11.3 Initial Meeting, 1987

1986

A Formal View Integration Method.

Joachim Biskup, Bernhard Convent

Proceedings of the 1986 ACM SIGMOD International Conference on Management of Data, 1986

One Flavor Assumption and Gamma-Acyclicity for Universal Relation Views.

Joachim Biskup, Hans Hermann Brüggemann, L. Schnetgöke, M. Kramer

Proceedings of the Fifth ACM SIGACT-SIGMOD Symposium on Principles of Database Systems, 1986

1984

Some Variants of the Take-Grant Protection Model.

Joachim Biskup

Inf. Process. Lett., 1984

Extending the Relational Algebra for Relations with Maybe Tuples and Existential and Universal Null Values.

Joachim Biskup

Fundam. Inform., 1984

1983

A Foundation of Codd's Relational Maybe-Operations.

Joachim Biskup

ACM Trans. Database Syst., 1983

Universal Relation Views: A Pragmatic Approach.

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the 9th International Conference on Very Large Data Bases, October 31, 1983

1982

Towards Designing Acyclic Database Schemes.

Joachim Biskup, Hans Hermann Brüggemann

Proceedings of the Advances in Data Base Theory, 1982

1980

Inferences of Multivalued Dependencies in Fixed and Undetermined Universes.

Joachim Biskup

Theor. Comput. Sci., 1980

1979

Synthesizing Independent Database Schemas.

Joachim Biskup, Umeshwar Dayal, Philip A. Bernstein

Proceedings of the 1979 ACM SIGMOD International Conference on Management of Data, Boston, Massachusetts, USA, May 30, 1979

A Formal Approach to Null Values in Database Relations.

Joachim Biskup

Proceedings of the Advances in Data Base Theory, 1979

1978

The Time Measure of One-Tape Turing Machines Does Not Have the Parallel Computation Property.

Joachim Biskup

SIAM J. Comput., 1978

On the Complementation Rule for Multivalued Dependencies in Database Relations.

Joachim Biskup

Acta Informatica, 1978

Path Measures of Turing Machine Computations (Preliminary Report).

Joachim Biskup

Proceedings of the Automata, 1978

1977

On BI-Immune Isols.

Joachim Biskup

Math. Log. Q., 1977

Über Projektionsmengen von Komplexitätsmaßen.

Joachim Biskup

J. Inf. Process. Cybern., 1977

1973

Zufällige Folgen und Bi-immunität.

Joachim Biskup

Proceedings of the 1. Fachtagung über Automatentheorie und Formale Sprachen, 1973