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Centralized Systems: A modern, general-purpose computer system consists of one to a few CPUs & a number of device controllers that are connected through a common bus that provides access to shared memory. The CPUs have local cache memories that store local copies of parts of the memory, to speed up access to data. Each device controller is in charge of a specific type of device (for example, a disk drive, an audio device, or a video display). The CPUs & the device controllers can execute concurrently, competing for memory access. Cache memory reduces the contention for memory access, since it reduces the number of times that the CPU needs to access shared memory.
In a distributed database system, the database is stored on several computers. The computers in a distributed system communicate with one another through various communication media, such as high-speed networks or telephone lines. They do not share main memory or disks. The computers in a distributed system may vary in size & function, ranging from workstations up to mainframe systems.
The main difference between centralized & distributed databases is that the distributed databases are typically geographically separated, are separately administered, & have slower interconnection. Also in distributed databases we differentiate between local & global transactions. A local transaction is one that accesses data only from sites where the transaction originated. A global transaction, on the other hand, is one that either accesses data in a site different from the one at which the transaction was initiated, or accessed data in several different sites.
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoA database system is one that have some information and data stored in it. A Database can be distributed or conventional. A distributed database is one in which data is distributed on different systems . A conventional database is one in which data is stored on a single system or server.
Wiki User
∙ 14y agoIf I am not mistaken, parallel means multiple copies of the same database. Distributed is more like a RAID system, meaning there is no redundancy.
Wiki User
∙ 9y agoA conventional database is located at one place and only on one server. A distributed database is spread across different geographical locations on different servers.
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What is the difference between distributed and parallel processing?
Distributed processing involves multiple interconnected systems working together to complete a task, with each system performing a different part of the task. Parallel processing, on the other hand, involves breaking down a task into smaller sub-tasks and executing them simultaneously using multiple processors within the same system. In distributed processing, systems may be geographically dispersed, while parallel processing occurs within a single system.
What is the difference between supercomputer and distributed computing?
supercomputers allows both parallel and distributed computing
What are the difference between hierarchical database and network database?
Hierarchical databases organize data in a tree-like structure with parent-child relationships and a strict one-to-many hierarchy, while network databases use a more flexible model with many-to-many relationships through pointers or links between records. Hierarchical databases are faster for accessing data along predefined paths, while network databases allow for more complex data relationships but can be more complex to manage.
What is the difference between distributed systems and advance distributed systems?
no answer
Different between distributed and decentralized on database?
Distributed databases are spread across multiple nodes or locations, while decentralized databases operate without a central authority or control. Distributed databases may have a centralized component for coordination, while decentralized databases use consensus algorithms for decision-making. Decentralized databases offer higher resilience and security against single points of failure compared to distributed databases.
What is Difference between real time database and simple database?
the difference is about the transactions. the normal database is not included deadline, but the real time database is.
Difference between database and distributed database?
A database is a collection of related data organized for quick search and retrieval, usually stored on a single computer system. A distributed database is a database in which parts of the database are stored in multiple locations but managed by a centralized control. Distributed databases are used to improve performance, reliability, and scalability by allowing data to be spread across multiple servers or locations.
Difference between parallel and distributed system?
the difference can be stated like : in parallel systems we have -more than one cpu -one memory -execution is simultaneous in distributed systems,we have -any number on memories -any number of cpu -each process has its own memory
What is the difference between database and datastore?
A database is a structured collection of data organized for efficient retrieval and updating. A datastore is a repository for storing and managing data, which can include databases as well as other types of data storage systems such as key-value stores or document stores. Essentially, a database is a type of datastore, but not all datastores are databases.
What is the difference between database and database administrator?
Database is the data stored in the server and Database administrator is the person who designs the database.
What different between local and distributed transactions?
Normally there are two types of servers. one is local and other one is distributed.. The difference between of both these transactions is local would be on the same server or database on the same machine and distributed is when u do transfer of money from one bank to another the servers involved are different and placed at different locations...
What is the difference between record and database?
A record is a single row of data within a database that contains information about a specific entity. A database is a collection of records organized in a structured format that allows for storage, retrieval, and manipulation of data. In other words, a database is like a container that holds records.
