We revisit column-oriented storage and query processing techniques in the context of contemporary graph database management systems (GDBMSs). Similar to RDBMSs, GDBMSs support read-heavy analytical workloads that however have fundamentally different data access patterns than traditional workloads. first derive a set desiderata for optimizing processors GDBMS based on their patterns. then presen...

rating. For example, the participants were told that tree is a very concrete item since one can touch it, whereas justice is very abstract since it is impossible to touch. These participants were givensince it is impossible to touch. These participants were given a scale on the top of a rating sheet that had a range of choices from 1 (very concrete) to 5 (very abstract). Following the list pres...

There are many existing well known cost models for the list accessing problem. The standard cost model developed by Sleator and Tarjan is most widely used. In this paper, we have made a comprehensive study of the existing cost models and proposed a new cost model for the list accessing problem. In our proposed cost model, for calculating the processing cost of request sequence using a singly li...

..........................................................................................................2 Acknowledgements.........................................................................................3 Table of contents............................................................................................4 List of figures...........................................................

The Data List Management Library (DLML) processes data lists in parallel, balancing the workload transparently to programmers. Programmers only need to organise data into a list, use DLML functions to insert and get data items, and specify the sequential function(s) to process each data item according to the application logic. The first design of DLML was targeted for use at a single cluster. T...

Sequence databases of today require frequent updating. Mirror procedures to copy incrementally updated databases as cumulative sets are the preferred method and can be implemented by straightforward scripting. However, limited bandwidth of networks and the increase of data require more powerful paradigms to reduce the workload reliably. We suggest the List Update Processing (LUP) principle. The...