A relational model of data for large shared data banks
Communications of the ACM
A unified approach to functional dependencies and relations
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
The Format Model: A Theory of database Organization
Journal of the ACM (JACM)
ACM Computing Surveys (CSUR)
Integrated information retrieval in a knowledge worker support system
SIGIR '89 Proceedings of the 12th annual international ACM SIGIR conference on Research and development in information retrieval
Comparing representations with relational and EER models
Communications of the ACM
An extended object model for the design and development of expert systems
SIGBDP '90 Proceedings of the 1990 ACM SIGBDP conference on Trends and directions in expert systems
Semantic data modeling of hypermedia associations
ACM Transactions on Information Systems (TOIS)
On the expressive power of the logical data model: prelimiary report
SIGMOD '85 Proceedings of the 1985 ACM SIGMOD international conference on Management of data
ACM Transactions on Database Systems (TODS)
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
A formal approach to the definition and the design of conceptual schemata for databased systems
ACM Transactions on Database Systems (TODS)
Formal semantics for time in databases
ACM Transactions on Database Systems (TODS)
Computational problems related to the design of normal form relational schemas
ACM Transactions on Database Systems (TODS)
Limitations of record-based information models
ACM Transactions on Database Systems (TODS)
Extending the database relational model to capture more meaning
ACM Transactions on Database Systems (TODS)
Normalization and hierarchical dependencies in the relational data model
ACM Transactions on Database Systems (TODS)
The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
Some high level language constructs for data of type relation
ACM Transactions on Database Systems (TODS)
Multivalued dependencies and a new normal form for relational databases
ACM Transactions on Database Systems (TODS)
On Axiomatizing Multivalued Dependencies in Relational Databases
Journal of the ACM (JACM)
Hierarchical Data-Base Management: A Survey
ACM Computing Surveys (CSUR)
A data modeling approach for office information systems
ACM Transactions on Information Systems (TOIS)
Database abstractions: aggregation
Communications of the ACM
A unified approach to functional dependencies and relations
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
The semantic data model: a modelling mechanism for data base applications
SIGMOD '78 Proceedings of the 1978 ACM SIGMOD international conference on management of data
A method for describing information required by the database design process
SIGMOD '76 Proceedings of the 1976 ACM SIGMOD international conference on Management of data
A complete axiomatization for functional and multivalued dependencies in database relations
SIGMOD '77 Proceedings of the 1977 ACM SIGMOD international conference on Management of data
A methodology of application program analysis and conversion based on database semantics
SIGMOD '77 Proceedings of the 1977 ACM SIGMOD international conference on Management of data
Data model integration using the structural model
SIGMOD '79 Proceedings of the 1979 ACM SIGMOD international conference on Management of data
An access path model for physical database design
SIGMOD '80 Proceedings of the 1980 ACM SIGMOD international conference on Management of data
An entity-based database user interface
SIGMOD '80 Proceedings of the 1980 ACM SIGMOD international conference on Management of data
The format model: a theory of database organization
PODS '82 Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems
Learning Transformation Rules for Semantic Query Optimization: A Data-Driven Approach
IEEE Transactions on Knowledge and Data Engineering
Office information models and the representation of 'office objects'
Proceedings of the SIGOA conference on Office information systems
A high-level data manipulation language for hierarchical data structures
Proceedings of the 1976 conference on Data : Abstraction, definition and structure
A semantic approach in designing relational data bases
ACM '78 Proceedings of the 1978 annual conference - Volume 2
The entity-relationship model: toward a unified view of data
Software pioneers
Conversion technology, an assessment
ACM SIGMIS Database
Supporting Semantic Diversity in the Relational Data Model: The Case of Multi-Face Attributes
Information Systems Frontiers
System/K: a knowledge base management system
SSDBM'83 Proceedings of the 2nd international workshop on Proceedings of the Second International Workshop on Statistical Database Management
Evolution of entity-relationship modelling
Data & Knowledge Engineering
Using semantic networks for data base management
VLDB '75 Proceedings of the 1st International Conference on Very Large Data Bases
VLDB '75 Proceedings of the 1st International Conference on Very Large Data Bases
Multi-level data model in DPLS: database, dynamic program control & open-ended POL support
VLDB '75 Proceedings of the 1st International Conference on Very Large Data Bases
Domain-oriented relational languages
VLDB '77 Proceedings of the third international conference on Very large data bases - Volume 3
The decomposition versus synthetic approach to relational database design
VLDB '77 Proceedings of the third international conference on Very large data bases - Volume 3
A consideration on normal form of not-necessarily-normalized relation in the relational data model
VLDB '77 Proceedings of the third international conference on Very large data bases - Volume 3
The role concept in data models
VLDB '77 Proceedings of the third international conference on Very large data bases - Volume 3
A sophisticate's introduction to database normalization theory
VLDB '78 Proceedings of the fourth international conference on Very Large Data Bases - Volume 4
A model and a method for logical data base design
VLDB '78 Proceedings of the fourth international conference on Very Large Data Bases - Volume 4
VLDB '78 Proceedings of the fourth international conference on Very Large Data Bases - Volume 4
Software requirement definition and data models
VLDB '79 Proceedings of the fifth international conference on Very Large Data Bases - Volume 5
Fundamental and secondary issues in the design of non-procedural relational languages
VLDB '79 Proceedings of the fifth international conference on Very Large Data Bases - Volume 5
New criteria for the conceptual model
VLDB '76 Proceedings of the second international conference on Systems for Large Data Bases
VLDB '76 Proceedings of the second international conference on Systems for Large Data Bases
Data architecture and data model considerations
AFIPS '77 Proceedings of the June 13-16, 1977, national computer conference
Properties of relationships and their representation
AFIPS '80 Proceedings of the May 19-22, 1980, national computer conference
TORUS: a natural language understanding system for data management
IJCAI'75 Proceedings of the 4th international joint conference on Artificial intelligence - Volume 1
Data structures and data accessing in data base systems past, present, future
IBM Systems Journal
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
Simplified integration of Prolog with RDBMS
ACM SIGMIS Database
An overview of recent data base research
ACM SIGMIS Database
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The relational model for data base organization introduced clearly defined basic algebraic concepts whose properties are well understood. As a consequence, questions of a semantic nature arise. Due to the mathematical nature of the relational model, these questions cannot be answered completely by it. Therefore, a data model is discussed that takes into account basic semantic properties that object types and relationships among them apparently have in the real world. The model permits a data base to be partitioned into independent object types which are natural insertion and deletion units, and associations among them. Independent object types are described by characteristics which are meaningful modification units.This data model permits us to analyze the ideas behind the relational theory more precisely, in particular the meaning of functional dependency and normalization. Insertion-deletion rules for relations in third normal form are developed, and proposals are made to avoid some drawbacks that exist even when relations in third normal form are used as the user interface to a data base.