SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
Text is a pervasive information type, and many applications require querying over text sources in addition to structured data. This paper studies the problem of query processing i...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
In a digital library system, documents are available in digital form and therefore are more easily copied and their copyrights are more easily violated. This is a very serious pro...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
When querying a temporal database, a user often makes certain semantic assumptions on stored temporal data. This paper formalizes and studies two types of semantic assumptions: po...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
: ANSI SQL-92 [MS, ANSI] defines Isolation Levels in terms of phenomena: Dirty Reads, Non-Repeatable Reads, and Phantoms. This paper shows that these phenomena and the ANSI SQL def...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
This paper describes an efficient optimistic concurrency control scheme for use in distributed database systems in which objects are cached and manipulated at client machines whil...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
Many papers have examined how to e ciently export a materialized view but to our knowledge none have studied how to e ciently import one. To import a view, i.e., to install a stre...