chapter 6 databas1

Question 1

centralized database system:

Answer 1

the DBMS and database are stored at a single site that is used by several other systems too

Question 2

distributed database system:

Answer 2

the actual database and the DBMS software are distributed from various sites that are connected by a computer network

Question 3

heterogeneous distributed database system:

Answer 3

different sites might use different DBMS software, but there is additional common software to support data exchange between these sites

Question 4

homogeneous distributed database systems:

Answer 4

use the same DBMS software at multiple sites

Question 5

multiuser database system:

Answer 5

a database management system which supports multiple users concurrently

Question 6

object-oriented data model:

Answer 6

a database management system in which information is represented in the form of objects as used in object-oriented programming

Question 7

single-user database system:

Answer 7

a database management system which supports one user at a time

Question 8

traditional models:

Answer 8

data models that preceded the relational model