Version control helps coordinating a group of people working concurrently to achieve a shared objective. Concurrency control helps coordinating a group of threads working concurrently to achieve a shared objective. The seemingly superficial analogy between version control and concurrency control is deeper than expected. A comparison of three major flavors of version control systems (exemplified...

First, this paper presents the meaningful characteristics and the concurrency control problem in distributed editing. In the following we define a service platform to support a distributed editor and also we discuss a proposal to implement this platform using the ISIS system and its facilities as group management and causal ordered multicasts.

Concurrency on a massive scale is required to meet the needs of today’s increasingly distributed systems. To better understand how current concurrency control schemes work on distributed systems, this paper reports an evaluation of concurrency control schemes for online transaction processing (OLTP) workloads on distributed database management systems (DBMS) with a variable number of nodes. Fiv...

A simple concurrency control mechanism for B+-trees Databases is introduced. It is based on early splitting and catenating of nodes during a process, which are candidates for such operations later on in that process. These early operations enable to lock only the current node in the process and its father node, and hence to increase the degree of concurrency relatively to other known mechanisms.

IS educators often struggle with curriculum issues including timeliness and completeness of the curriculum. While model curricula suggest that programming courses should be a part of an IS undergraduate degree, little guidance is offered as to the order and timing of these courses. A longitudinal survey of students in programming courses was used to assess whether sequence or concurrency explai...