On the expressive power of the extended relational algebra for the unnormalized relational model
PODS '87 Proceedings of the sixth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Architecture and implementation of the Darmstadt database kernel system
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
A recursive algebra and query optimization for nested relations
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Algebraic support for complex objects with arrays, identity, and inheritance
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
Converting nested algebra expressions into flat algebra expressions
ACM Transactions on Database Systems (TODS)
Tutorial: languages for collection types
PODS '94 Proceedings of the thirteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Possibilities and limitations of using flat operators in nested algebra expressions
Proceedings of the seventh ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Supporting Flat Relations by a Nested Relational Kernel
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
An Implementation for Nested Relational Databases
VLDB '88 Proceedings of the 14th International Conference on Very Large Data Bases
VLDB '90 Proceedings of the 16th International Conference on Very Large Data Bases
SQL query optimization through nested relational algebra
ACM Transactions on Database Systems (TODS)
Equivalence of nested queries with mixed semantics
Proceedings of the twenty-eighth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
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