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What are distributed-databases in dbms?
Distributed databases in a DBMS are databases that are stored on multiple computers across a network. They allow for data to be spread out and accessed simultaneously from different locations, which can improve performance and scalability. Distributed databases can enhance fault tolerance and reduce the risk of data loss.
What is query processor in distributed dbms?
The query processor in a distributed DBMS is responsible for receiving and analyzing queries from users or applications, determining how to execute the query across multiple distributed nodes, and coordinating the execution of the query to retrieve the desired data efficiently. It optimizes query performance by considering factors such as data distribution, network latency, and data transfer costs across distributed nodes.
What are three types of dbms?
Hierarchical DBMSNetwork DBMSRelational DBMS
What is the difference between ddbms and parallel dbms?
A distributed database management system (DDBMS) manages databases that are stored on multiple computers, often in different locations. A parallel database management system (parallel DBMS) uses multiple processors to perform operations on a single database, improving performance by dividing tasks among these processors. In essence, DDBMS focuses on data distribution and replication across different sites, while parallel DBMS focuses on high-speed data processing using multiple processors.
Which DBMS features do you find most useful and why?
Some of the most useful DBMS features include data security mechanisms like encryption and access controls, scalability options for handling growing amounts of data, and performance tuning tools for optimizing query performance. These features help ensure data integrity, protect against security threats, and allow for efficient storage and retrieval of data as needed by the application.
Why global query optimization is difficult in distributed dbms?
1:parallel execution 2: Additional communication cost 3: Transparency and replication
What DBMS facilities least useful?
Least facilities of
The execution of a user program which interacts with the distributed DBMS ia called?
Transaction
DBMS used in web-based application?
MYSQL - a freely distributed DBMS Microsoft SQL Server - the product of old-brand Microsoft Oracle - a strong and powerful DBMS, which is normally used by larger enterprises nowadays.
What are distributed-databases in dbms?
Distributed databases in a DBMS are databases that are stored on multiple computers across a network. They allow for data to be spread out and accessed simultaneously from different locations, which can improve performance and scalability. Distributed databases can enhance fault tolerance and reduce the risk of data loss.
What is the use of dbms?
DataBase Management System (DBMS)is a software package# it allows data to be effectively stored, retrieved and manipulatedand # the data stored in a DBMS packege can be accessed by multiple users and by multiple application programs like (SQL Server, Oracle, Ms-Access) .Types of DBMS# Hierarachical DBMS (HDBMS)# Network DBMS (NDBMS)# Relational DBMS (RDBMS)# Object Oriented DataBase(OODB)# Distributed DBMS (DDBMS)
What is query processor in distributed dbms?
The query processor in a distributed DBMS is responsible for receiving and analyzing queries from users or applications, determining how to execute the query across multiple distributed nodes, and coordinating the execution of the query to retrieve the desired data efficiently. It optimizes query performance by considering factors such as data distribution, network latency, and data transfer costs across distributed nodes.
Reference architecture of distributed database management system?
A reference architecture consists of:Set of global external schemas.Global conceptual schema (GCS).Fragmentation schema and allocation schema.Set of schemas for each local DBMS conforming to 3-level ANSI/SPARC .Some levels may be missing, depending on levels of transparency supported.Can be homogeneous or heterogeneous.Gaurav SinghG.N.I.T MCA,GREATER NOIDAContact: 9458660007
What are highlights of DBMS?
NA_ what are highlights of advanced DBMS what are highlights of advanced DBMS what are highlights of advanced DBMS
Is java DBMS?
no, Java is not dbms.. Java is a programming language Dbms is database
Is SQL DBMS or RDBMS?
dbms
Based on the autonomy of local systems their distribution and their heterogeneity three typical architectural models can be identified for distributed DBMS Describe the characteristics of each?
i have no idea at all. Hate this subject.
