Add to ORKGThe translation of queries from complex data models to simpler data models is a recurring theme in the construction of efficient data management systems. In this paper we propose a general framework to guide the translation from data models with nested types to a flat relational model (query flattening), and show how several instances of query flattening fit or do not fit in this pattern
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Traditional information search in which queries are posed against a known and rigid schema over a st...
Traditional information search in which queries are posed against a known and rigid schema over a st...
The theory developed in this thesis provides a method to improve the efficiency of querying nested d...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Nested relational query languages have been explored extensively, and underlie industrial language-i...
This work is based on the observation that languages for two seemingly distant domains are closely ...
This work is based on the observation that languages for two seemingly distant domains are closely ...
Over the last few years several new data models together with their languages have been developed to...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Traditional information search in which queries are posed against a known and rigid schema over a st...
Traditional information search in which queries are posed against a known and rigid schema over a st...
The theory developed in this thesis provides a method to improve the efficiency of querying nested d...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Algebraic transformation and optimization techniques have been the method of choice in relational qu...
Nested relational query languages have been explored extensively, and underlie industrial language-i...
This work is based on the observation that languages for two seemingly distant domains are closely ...
This work is based on the observation that languages for two seemingly distant domains are closely ...
Over the last few years several new data models together with their languages have been developed to...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Nested relations generalize ordinary flat relations by allowing tuple values to be either atomic or ...
Traditional information search in which queries are posed against a known and rigid schema over a st...
Traditional information search in which queries are posed against a known and rigid schema over a st...