Object-oriented programming environments are increasingly needed for programming OIS applications. A prototype object-oriented language has been implemented, and we are refining the language and its implementation. The environment integrates a number of database and operating system concepts, in particular, abstract data types, database constraints, atomic transactions, data persistency, trigge...

This paper describes a unified architecture for control applications using an extended object-oriented database system with queries and rules. We specify the requirements that control applications demand on the database, and how they are met by our database system architecture. The database system, AMOS, is a main memory database that provides information sharing, powerful data access via an ob...

Coldbase is a column-oriented in-memory database implemented in Java that is used with a specific workload in mind. Coldbase is optimized to receive large streams of timestamped trading data arriving at a fast pace while allowing simple but frequent queries that analyse the data concurrently. By limiting the functionality, Coldbase is able to reach a high performance while keeping the memory co...

Row-oriented databases (or “row-store”) employ data compression methods (like dictionary encoding) to reduce the I/O cost by decreasing the data sizes. However, there are two limitations on row-stores when applying data compression schemes: (1) row-stores only allow encoding one single value at a time, and (2) they have to pay the decompression cost in query processing. The above shortcomings l...

Abstract The sustaining peace agenda, fielded by the UN in mid-2010s, offers an opportunity to take a fresh look at ways which we approach our applied, everyday work on and/or for classroom and beyond. Regarding field of education, there is merit adopting less prescriptive, value-laden universalising and, same time, more indeterminate, normatively restrained humble elements that set discourse a...

As a result of continuous innovation in hardware technology, computers are made more and more powerful than their prior models. Modern servers nowadays can possess large main memory capability that can size up to 1 Terabytes (TB) and more. As memory accesses are at least 100 times faster than disk, keeping data in main memory becomes an interesting design principle to increase the performance o...