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Q: Is it possible to have concurrency but not parallelism?
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What are researches in computer science now?

The big topics hot topics right now are artificial intelligence and parallelism/concurrency.


What is principle of concurrency in OS?

concurrency is the interleaving of processes in time to give the appearance of simultaneous execution. Thus it differs from parallelism, which offers genuine simultaneous execution. However the issues and difficulties raised by the two overlap to a large extent: • sharing global resources safely is difficult; • optimal allocation of resources is difficult; • locating programming errors can be difficult, because the contexts in which errors occur cannot always be reproduced easily. Parallelism also introduces the issue that different processors may run at different speeds, but again this problem is mirrored in concurrency because different processes progress at different rates.


What is interquery parallelism?

Hi: interQuery parallelism means that it is possible to procsess number of transactions in parallel with each other. Saudi Ariabia


Differentiate Optimistic concurrency control and pessimistic concurrency control?

concurrency control algorithm


What is difference between interquery parallelism and intraquery parallelism.Explain with an example?

Inter-query parallelism results from the ability to execute multiple queries at the same time while intra-query parallelism is achieved by breaking up a single query into a number of subqueries each of which is executed at a different site, accessing a different part of the distributed database. If the user access to the distributed database consisted only of querying (i.e., read-only access), then provision of inter-query and intra-query parallelism would imply that as much of the database as possible should be replicated. However, since most database accesses are not read-only, the mixing of read and update operations requires the implementation of elaborate concurrency control and commit protocols.


How do serializers solve several deficiencies of monitors?

Serializers allows concurrency using hallow regions, which is not possible using monitors


What is a perpendicular bisector concurrency conjecture?

The Perpendicular bisector concurrency conjecture is the circumcenter


The Point of Concurrency of the Angle Bisectors of a Triangle?

The point of concurrency is the point intersection.


Pram model allows exploitation of concurrency?

do you thing that pram allows exploitation of concurrency


What is the point of concurrency of an altitude of a triangle?

The point of concurrency of the altitudes in a triangle is the orthocenter, while the point of concurrency for the perpendicular bisectors is the centroid/circumcenter. Sorry if this is late! xD


Is it true that the point of concurrency of any triangle only happens inside the triangle?

Depends on the point of concurrency of what. The point of concurrency of altitudes will be outside in any obtuse triangle.


Where can one learn more about Java concurrency in practice?

One may learn about Java concurrency in the book 'Java concurrency in practice' which can be purchased from various online retailers. Additionally, Java concurrency is often discussed in various formal training classes.