DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A set of databases from different b vendors possibly using different database paradigms
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An approach to a problem that is not guaranteed to work but performs well in most cases.
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Information that is hidden in a database and that cannot be recovered by a simple SQL query.
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None of these
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Detailed explanation-1: -A heterogeneous database system is an automated (or semi-automated) system for the integration of heterogeneous, disparate database management systems to present a user with a single, unified query interface.
Detailed explanation-2: -A heterogeneous distributed database is which of the following? The same DBMS is used at each location and data are not distributed across all nodes. The same DBMS is used at each location and data are distributed across all nodes. A different DBMS is used at each location and data are not distributed across all nodes.
Detailed explanation-3: -Oracle Database Heterogeneous Services (HS): A process that is embedded in the Oracle database that makes non-Oracle database tables, like DB2, look like and act like Oracle database tables.