Abstract. A significant increase in real world event monitoring capability with wireless sensor networks brought a new challenge to ubiquitous computing. To manage high volume and...
A very active field of research of Database Management Systems (DBMS) is concerned with an augmentation of DBMS by rules. Passive rules (constraints) were the first to be investig...
We address the problem of efficient support for active rules in XML database systems. We describe a general form of active rules for XML based on XQuery and a previously defined...
Migrating legacy systems involves replacing (either wholly or partially) existing systems and databases, and complex transformations between old and new data, processes and system...
A progressive spatial query retrieves spatial data based on previous queries (e.g., to fetch data in a more restricted area with higher resolution). A direct query, on the other si...