DEXA
1998
Springer
13 years 8 months ago
1998
Springer
Abstract. To achieve acceptable query response times in data warehouse environments, the data have to be pre-aggregated according to the need of the applications and stored redunda...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
This paper examines the properties of metadata in the form of IF THEN rules which contain two predicates on attributes of a relational database table. For example: a(15 .. 30) d(2...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
This paper presents a framework for a learning based approach to dynamically evolve the conceptual structure of a database in order to facilitate virtual representation of data in ...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
The object identifier index of an object-oriented database system is typically 20% of the size of the database itself, and for large databases, only a small part of the index fits...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
Intelligent agents and active databases have a number of common characteristics, the most important of which is that they both execute actions by firing rules upon events occurring...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
Abstract. In this paper we examine the problem of indexing time sequences in order to answer inverse queries. An inverse query computes all the time points at which the sequence co...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
: Semantic similarity between schema elements is greatly influenced by the context in which the elements are defined and compared. This paper emphasizes on the role of context in e...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
We discuss and prove the correctness of a transaction model for mobile computing. In our transaction model, we incorporate a prewrite operation (before a write) which does not upda...
DEXA
1998
Springer
13 years 8 months ago
1998
Springer
Prototype databases are needed in any information system development process to support data-intensive applications development. It is common practice to populate these databases u...