One common pattern database compression technique is to merge adjacent database entries and store the minimum of merged entries to maintain heuristic admissibility. In this paper we propose a compression technique that preserves every entry, but reduces the number of bits used to store each entry, therefore limiting the values that can be represented. Even when this technique throws away low va...

1. Daniel J. Abadi ,Daniel S. Myers, David J. DeWitt, Samuel R. Madden. Materialization Strategies in a Column-Oriented DBMS. Proceedings of ICDE 2007, Istanbul, Turkey. 2. Daniel J. Abadi, Samuel R. Madden, Nabil hachem. Column-Store vs Row-store How different are they really? SIGMOD’08, June 9–12, 2008, Vancouver, BC, Canada 3. Daniel Abadi,PeterBoncz,Stavros Harizopoulos, Stratos Idreos, Sam...

Essentially all distributed systems, applications, and services at some level boil down to the problem of managing distributed shared state. Unfortunately, while the problem of managing distributed shared state is shared by many applications, there is no common means of managing the data { every application devises its own solution. We have developed Khazana, a distributed service exporting the...

Essentially all distributed systems applications and services at some level boil down to the problem of man aging distributed shared state Unfortunately while the problem of managing distributed shared state is shared by many applications there is no common means of managing the data every application devises its own solution We have developed Khazana a distributed service exporting the abstrac...

Object stores provide a highly scalable and cheap storage solution due to their key-value store semantics and commodity-hardware based deployment. This makes them an attractive option for archiving large amounts of data that are produced in science and industry. To analyze that data, advanced analytics such as MapReduce can be used. However, copying the data from the object store into the distr...

COSMOS is a method for specifying the behavior of a synchronizable data store by modeling the data store as a state machine. Such a model can be used to define a standard for interoperable data synchronization systems, defining the sequence of messages sent and received during synchronization without constraining the implementation of a conforming system. COSMOS models can be collected, studied...

This paper describes and discusses a Plackett-Burman experiment aimed at increasing supermarket sales of a top-selling national magazine. The experiment involved 10 factors relating to in-store advertising and the location of the magazine within the store. We discuss issues including choice of factors, alternative designs, sample-size determination (number of test stores and the length of the t...

In recent years a range of single programming language systems have been developed that are supported by a persistent store. Examples of such systems include Argus, Galileo, PS-algol and Smalltalk. Although each of these systems is based on a subtly different concept of persistence a common approach is to utilise a layered architecture. This paper presents the design of one such layered archite...

In recent years a range of single programming language systems have been developed that are supported by a persistent store. Examples of such systems include Argus, Galileo, PS-algol and Smalltalk. Although each of these systems is based on a subtly different concept of persistence a common approach is to utilise a layered architecture. This paper presents the design of one such layered archite...