What is the concept of distributed database?
A distributed database is a database that consists of two or more files located in different sites either on the same network or on entirely different networks. A centralized distributed database management system (DDBMS) integrates data logically so it can be managed as if it were all stored in the same location.
What is distributed database and its types?
A distributed database is basically a database that is not limited to one system, it is spread over different sites, i.e, on multiple computers or over a network of computers. A distributed database system is located on various sites that don’t share physical components.
What are the four different types of distributed database systems?
Distributed databases can be classified into homogeneous and heterogeneous databases having further divisions. The next section of this chapter discusses the distributed architectures namely client – server, peer – to – peer and multi – DBMS.
How we can use the concept of distributed database management system?
A Distributed Database Management System (DDBMS) manages the distributed database and provides mechanisms so as to make the databases transparent to the users. In these systems, data is intentionally distributed among multiple nodes so that all computing resources of the organization can be optimally used.
What are the components of distributed database management system?
The required components of a distributed database management system can be categorised as hardware, communications media and software. Each processing site (or node) that forms the database system can consist of various types of hardware. Nodes can be mainframes, minicomputers or microcomputers.
What are the concepts of a distributed database management system?
The Distributed Database Management Systems (DDBMS) uses the concepts of: 1) Database Management Systems 2) Networking The key is to identify the environments in which we have to use the distributed databases. You may realize that using distributed databases in some situations may not prove to be fruitful.
Can a distributed database system be an Oracle Database?
A distributed database system allows applications to access data from local and remote databases. In a homogenous distributed database system, each database is an Oracle Database. In a heterogeneous distributed database system, at least one of the databases is not an Oracle Database.
How does a heterogeneous distributed database system work?
In a heterogeneous distributed database system, at least one of the databases is a non-Oracle Database system. To the application, the heterogeneous distributed database system appears as a single, local, Oracle Database. The local Oracle Database server hides the distribution and heterogeneity of the data.
How does a distributed database work in real time?
In a pure (that is, not replicated) distributed database, the system manages a single copy of all data and supporting database objects. Typically, distributed database applications use distributed transactions to access both local and remote data and modify the global database in real-time. This book discusses only pure distributed databases.