Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
A temporally oriented data model
ACM Transactions on Database Systems (TODS)
The relational model with relation-valued attributes
Information Systems
A new normal form for nested relations
ACM Transactions on Database Systems (TODS)
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
The temporal query language TQuel
ACM Transactions on Database Systems (TODS)
Adding time dimension to relational model and extending relational algebra
Information Systems
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
ACM Transactions on Database Systems (TODS)
The design of ¬ 1NF relational databases into nested normal form
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Logical modeling of temporal data
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Extended algebra and calculus for nested relational databases
ACM Transactions on Database Systems (TODS)
A homogeneous relational model and query languages for temporal databases
ACM Transactions on Database Systems (TODS)
A generalized model for a relational temporal database
SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
Time-by-Example Query Language for Historical Databases
IEEE Transactions on Software Engineering
On an algebra for historical relational databases: two views
SIGMOD '85 Proceedings of the 1985 ACM SIGMOD international conference on Management of data
Formal semantics for time in databases
ACM Transactions on Database Systems (TODS)
A relational model of data for large shared data banks
Communications of the ACM
Access path selection in a relational database management system
SIGMOD '79 Proceedings of the 1979 ACM SIGMOD international conference on Management of data
Remarks on the algebra of non first normal form relations
PODS '82 Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems
Designing DBMS support for the temporal dimension
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
Making smalltalk a database system
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
A Statistical Interface for Historical Relational Databases
Proceedings of the Third International Conference on Data Engineering
Toward a Multihomogeneous Model for a Temporal Database
Proceedings of the Second International Conference on Data Engineering
VLDB '86 Proceedings of the 12th International Conference on Very Large Data Bases
The database semantics of time
The database semantics of time
The time relational model
Algebraic support for complex objects with arrays, identity, and inheritance
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
Design of a temporal database for phlebitis
SAC '92 Proceedings of the 1992 ACM/SIGAPP Symposium on Applied computing: technological challenges of the 1990's
A method for constructing generalized non-normal-form models
CSC '91 Proceedings of the 19th annual conference on Computer Science
Semantic constraints on the connections among tuple components in non-normal-form models
CSC '91 Proceedings of the 19th annual conference on Computer Science
Extending Existing Dependency Theory to Temporal Databases
IEEE Transactions on Knowledge and Data Engineering
The Expressive Power of Temporal Relational Query Languages
IEEE Transactions on Knowledge and Data Engineering
Temporal Relational Data Model
IEEE Transactions on Knowledge and Data Engineering
A Uniform Approach to Processing Temporal Queries
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
Nested bitemporal relational algebra
ISCIS'06 Proceedings of the 21st international conference on Computer and Information Sciences
TempoXML: Nested bitemporal relationship modeling and conversion tool for fuzzy XML
Information Sciences: an International Journal
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The paper extends nested relations for managing temporal variation of complex objects. It combines the research in temporal databases and nested relations for nontraditional database applications. The basic modelling construct is a temporal atom as an attribute value. A temporal atom consists of two components, a value and temporal set which is a set of times denoting the validity period of the value. We define algebra operations for nested historical relations. Data redundancy in nested historical relations is also discussed and criteria for well-structured nested relations are established.