995 search results - page 65 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
109
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VLDB
2001
ACM
15 years 6 months ago
2001
ACM
Queries navigate semistructured data via path expressions, and can be accelerated using an index. Our solution encodes paths as strings, and inserts those strings into a special i...
240
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ICDE
2002
IEEE
16 years 3 months ago
2002
IEEE
With the growth of the Web, there has been a rapid increase in the number of users who need to access online databases without having a detailed knowledge of the schema or of quer...
VLDB
1995
ACM
15 years 5 months ago
1995
ACM
Scientific data of importance to biologists in the Humitn Genome Project resides not only in conventional da.tabases, but in structured files maintained in a number of different f...
ADBIS
2005
Springer
15 years 7 months ago
2005
Springer
We present a query language called MDatalog, which is an extension of Datalog for multimodal deductive databases. We define modal relational algebras and give the seminaive evalua...
232
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ICDE
2005
IEEE
16 years 3 months ago
2005
IEEE
Data warehousing and on-line analytical processing (OLAP) are essential for decision support applications. Common OLAP operations include for example drill down, roll up, pivot an...