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Biermann E.,TU Berlin | Ermel C.,TU Berlin | Lambers L.,Hasso Plattner Institute fur Softwaresystemtechnik GmbH | Prange U.,TU Berlin | And 2 more authors.
International Journal on Software Tools for Technology Transfer | Year: 2010

In this paper, we focus on the Conference Scheduling System, a case study at the Tool Contest of Graph-Based Tools (GraBaTs) 2008. We took part in the contest with our graph transformation tool AGG and the Eclipse-based EMF model transformation tool EMF Tiger. We present the features of both tools and evaluate their abilities to model the Conference Scheduling System and to deal with additional contest assignments like model instance generation, property verification, and interoperability. © 2010 Springer-Verlag. Source


Patent
Hasso Plattner Institute fur Softwaresystemtechnik GmbH | Date: 2011-12-28

In general, methods and apparatus, including computer program products, implementing and using techniques for providing a discovery service in a unique identifier network are described. Said discovery service is suitable for tracking and tracing a query item represented by a unique identifier in a unique identifier network. In particular, a search method for a containment-aware discovery service is described.


Patent
Hasso Plattner Institute fur Softwaresystemtechnik GmbH | Date: 2011-12-28

In general, methods and apparatus, including computer program products, implementing and using techniques for providing a discovery service in a unique identifier network are described. Said discovery service is suitable for tracking and tracing a query item represented by a unique identifier in a unique identifier network. In particular, a filter method for a containment-aware discovery service is described.


Patent
Hasso Plattner Institute fur Softwaresystemtechnik GmbH | Date: 2011-10-07

A system and method of determining an earliest delivery date for a demand on the basis of a fact table stored in a database, where the demand indicates both a desired date and a desired quantity for items from a stock, where a fact time series is comprised by and/or deducible from the fact table, and where the fact time series comprises fact tuples indicating both a fact date and a change in quantity of stock items that occurred on this fact date. The method includes generating an aggregated time series from the fact time series by defining and/or obtaining discrete time intervals, and generating, for at least one discrete time interval, an aggregated tuple indicating both its corresponding discrete time interval and the aggregated change in quantity of stock items that occurred in its corresponding discrete time interval.


Patent
Hasso Plattner Institute Fur Softwaresystemtechnik GmbH | Date: 2010-06-30

The invention relates to a computer-implemented method for dynamically and horizontally partitioning a table of a relational database, wherein the table comprises records, wherein the records are mapped to a plurality of states, wherein the table is horizontally partitioned into a plurality of partitions, and wherein the plurality of states is mapped to the plurality of partitions. The method comprises the steps of changing the assignment of a first record from a first state to a second state, wherein the first state is mapped to a first partition, wherein the second state is mapped to a second partition, wherein the first partition is not the second partition, and storing the first record in the second partition. The invention further relates to a computer system implementing the abovementioned method for dynamically and horizontally partitioning a table of a relational database.

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