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a set of programs
Distributed Operating System (DOS)
In computing, a distributed system is a system that works in different locations or work using separate processing or processors to their jobs, often simultaneously. Data can be stored in different locations in a distributed database, although a user won't know it. The data will appear on their screen when they access, so they are unaware of its location. Networks use distributed systems to link up systems that work together but are in separate locations. If there are full copies of data in various locations, then if one location gets damaged or inaccessible, the system can still function. This makes data and systems more secure.
On a computer network, operating systems communicate with each other. In a distributed operating system, a single OS is communicating with itself across multiple machines.
User-level threads have the advantage of being lightweight and can be managed without kernel intervention, allowing for faster thread switching. However, they are limited in their ability to utilize multiple processors efficiently and can be blocked by system calls made by a single thread. Kernel-level threads, on the other hand, offer better performance on multi-core systems and can take advantage of kernel features, but they are heavier in terms of resource consumption and switching between threads can be slower due to kernel involvement.
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1 Explain architecture of Distributed Database systems? Also, explain the reasons for building distributed database systems?
Wesley W. Chu has written: 'Distributed Database Systems - Distributed Systems -' 'Distributed Processing and Database Systems'
Distributed Systems Technology Centre was created in 1992.
Information systems using a mainframe are referred to as distributed because computing results must be distributed to users at various locations.
Information systems using a mainframe are referred to as distributed because computing results must be distributed to users at various locations.
a set of programs
A distributed computing system requires each machine attached to the network to has specific software allowing them to talk to each other. A distributed virtual systems allows the machines on a network to talk to each other without the use of central software.
Grid Computing and Distributed Systems
Distributed Software engineering is combination of distributed system engineering and distributed system architecture For more detail you need to go through the following topics 1)Distributed systems issues 2)Client-server computing 3)Architectural patterns for distributed systems 4)Software as a service
POSIX threads are user level threads, because had a interface library and the operating systems don't control his ejecution and does not know
Distributed systems refer to a network of independent computers that work together to achieve a common goal, while distributed database systems specifically involve databases that are spread across multiple locations. Distributed database systems focus on storing and managing data across various nodes in a network, whereas distributed systems are more general and encompass a broader range of functionalities beyond data management.