Distributed Database Systems Integration

Processing logic, data, and control

A collection of multiple, logically interrelated databases distributed over a computer network and the software that manages it

A timesharing computer system

<p>A collection of multiple, logically interrelated databases distributed over a computer network</p> Signup and view all the answers

<p>The software that manages a distributed database and provides an access mechanism that makes this distribution transparent to the users</p> Signup and view all the answers

<p>A computing device that can execute a program on its own</p> Signup and view all the answers

<p>A distributed database system is used for multiple databases over a computer network, while a parallel database system is used for multiple processors</p> Signup and view all the answers

<p>It is used for multiple databases over a computer network</p> Signup and view all the answers

<p>Transparent management of distributed, fragmented, and replicated data</p> Signup and view all the answers

<p>Immunity of user applications to changes in the definition and organization of data</p> Signup and view all the answers

<p>Refers to the immunity of user applications to changes in the logical structure of the database</p> Signup and view all the answers

<p>Requires that users do not have to specify where data are located</p> Signup and view all the answers

<p>The system should handle the management of copies and the user should act as if there is a single copy of the data</p> Signup and view all the answers

<p>Data can be placed on that user’s local machine as well as on the machine of another user with the same access requirements</p> Signup and view all the answers

<p>Refers to the immunity of user applications to changes in the physical structure of the database</p> Signup and view all the answers

<p>Perform a task independent of both the location of the data and the system on which an operation is carried out</p> Signup and view all the answers

<p>The client initiates the transfer of data.</p> Signup and view all the answers

<p>The trigger for data transfer.</p> Signup and view all the answers

<p>It combines client-pull and server-push mechanisms.</p> Signup and view all the answers

<p>One-to-one communication between a server and a client.</p> Signup and view all the answers

<p>Data is pulled from servers to clients in an ad-hoc fashion.</p> Signup and view all the answers

<p>An application that sends out stock prices only when they change.</p> Signup and view all the answers

<p>The server sends data to multiple clients.</p> Signup and view all the answers

<p>The initiation of data transfer.</p> Signup and view all the answers

<p>Data distribution and replication</p> Signup and view all the answers

<p>Minimize the cost of data transmission and local processing</p> Signup and view all the answers

<p>Synchronizing concurrent accesses</p> Signup and view all the answers

<p>Atomicity and durability</p> Signup and view all the answers

<p>They are related but separate issues</p> Signup and view all the answers

<p>To define the structure of the system</p> Signup and view all the answers

<p>Query optimization is more complex</p> Signup and view all the answers

<p>Consistency and isolation of transactions' effects</p> Signup and view all the answers

<p>Individual DBMSs are fully autonomous and have no concept of cooperation.</p> Signup and view all the answers

<p>Autonomous DBMS</p> Signup and view all the answers

<p>To receive global user requests</p> Signup and view all the answers

<p>To integrate local DBMSs</p> Signup and view all the answers

<p>GES is a global schema, and LES is a local schema</p> Signup and view all the answers

<p>Multidatabase Systems</p> Signup and view all the answers

<p>Local Schema</p> Signup and view all the answers

<p>Request Decomposition</p> Signup and view all the answers