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VLDB
1989
ACM
104views Database» more  VLDB 1989»
13 years 11 months ago
Event-Join Optimization in Temporal Relational Databases
An Event-Join combinestemporaljoin and outerjoin properties into a single operation. It is mostly used to group temporal attributes of an entity into a single relation. In this pa...
Arie Segev, Himawan Gunadhi
VLDB
1989
ACM
61views Database» more  VLDB 1989»
13 years 11 months ago
Sorting, Grouping and Duplicate Elimination in the Advanced Information Management Prototype
Gunter Saake, Volker Linnemann, Peter Pistor, Lutz...
VLDB
1989
ACM
150views Database» more  VLDB 1989»
13 years 11 months ago
Aggregates in Possibilistic Databases
Fuzzy set theory represents a uniform framework for extending the relational database model to han-, dle imprecision of information found in the real world. None of the existing p...
Elke A. Rundensteiner, Lubomir Bic
VLDB
1989
ACM
82views Database» more  VLDB 1989»
13 years 11 months ago
Database Support for Hypertext
with a full abstract specification of the data-types involved and a multi-level architecture similar to that of a DBMS. A related question is the kind of model that is most suitabl...
B. Nick Rossiter
VLDB
1989
ACM
87views Database» more  VLDB 1989»
13 years 11 months ago
Situation Monitoring for Active Databases
paper is concerned with ways of specifying situations and evaluating them efficiently. The techniques described in this paper were developed as part of the HiPAC (High Performance...
Arnon Rosenthal, Sharma Chakravarthy, Barbara T. B...
VLDB
1989
ACM
105views Database» more  VLDB 1989»
13 years 11 months ago
Monitoring Database Objects
A method is described for actively interfacing an Object-Oriented Database Management System (OODBMS) to application pre grams. The method, called a database monitor, observes how...
Tore Risch
VLDB
1989
ACM
88views Database» more  VLDB 1989»
13 years 11 months ago
On the design and implementation of information systems from deductive conceptual models
Deductive conceptualmodels(DCMs) aim at providing a complete specification of information systems,expressing only its logic component.It hasbeenshownthatDCMs have some advantagesw...
Antoni Olivé
VLDB
1989
ACM
98views Database» more  VLDB 1989»
13 years 11 months ago
A Family of Incomplete Relational Database Models
In this paper. we utilize intervals for unknown values in incompleterelational databases.We usetablesto representunknown relations. First, we define three partial tuple types in a...
Adegbemiga Ola, Gultekin Özsoyoglu
VLDB
1989
ACM
102views Database» more  VLDB 1989»
13 years 11 months ago
Argument Reduction by Factoring
Jeffrey F. Naughton, Raghu Ramakrishnan, Yehoshua ...