Data that are associated with a valid time interval are present in many real-world
applications that deal with employment contracts, insurance policies, software bugs, etc. The …

Ongoing time point now is used to state that a tuple is valid from the start point onward. For
database systems ongoing time points have far-reaching implications since they change …

Ongoing time point now is used to state that a tuple is valid from the start point onward. For
database systems ongoing time points have far-reaching implications since they change …

Previous work on temporal and historical databases has been mainly based on the
assumption that the time intervals of temporal attributes and the start/finish points of modeled …

Despite the ubiquity of temporal data and considerable research on processing such data,
database systems largely remain designed for processing the current state of some modeled …

Foundations of temporal query languages Foundations of temporal query languages Abstract
Temporal Databases are repositories of information dependent on time. The major difference …

We present and analyze algorithms for the incremental computation of time-varying queries
in which selection predicates refer to the state of a clock. Such queries occur naturally in …

Most real-world databases record time-varying information. In such databases, the notion of
“the current time,” or NOW, occurs naturally and prominently. For example, when capturing …

Many databases contain temporal, or time-referenced, data and use intervals to capture the
temporal aspect. While SQL-based database management systems (DBMSs) are capable of …

Time is present in almost all application domains, and many applications have to store and
manage time-varying data. Temporal databases aim to provide specific support for the …