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Questions and Answers
One of the advantages of using the database approach is to allow unauthorized access to data.
One of the advantages of using the database approach is to allow unauthorized access to data.
False
Object-oriented DBMSs provide storage structures for efficient query processing.
Object-oriented DBMSs provide storage structures for efficient query processing.
True
The database approach does not provide persistent storage for program objects.
The database approach does not provide persistent storage for program objects.
False
The database approach does not allow for the sharing of data among multiple users.
The database approach does not allow for the sharing of data among multiple users.
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The database approach does not enforce integrity constraints on the database.
The database approach does not enforce integrity constraints on the database.
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Using the database approach does not reduce application development time.
Using the database approach does not reduce application development time.
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A conceptual data model represents the physical storage of the database.
A conceptual data model represents the physical storage of the database.
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In the database approach, the DBMS catalog stores the actual data of the database.
In the database approach, the DBMS catalog stores the actual data of the database.
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Data abstraction is used to present the users with a physical view of the database.
Data abstraction is used to present the users with a physical view of the database.
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A data model is used to describe the relationships between entities in the database.
A data model is used to describe the relationships between entities in the database.
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Program-data independence allows changing the DBMS software without having to change the data structures.
Program-data independence allows changing the DBMS software without having to change the data structures.
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The self-describing nature of a database system allows the DBMS software to work with different database applications.
The self-describing nature of a database system allows the DBMS software to work with different database applications.
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In a database, a single user view is imposed on all users.
In a database, a single user view is imposed on all users.
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Data modeling focuses on data storage details rather than data model constructs.
Data modeling focuses on data storage details rather than data model constructs.
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Database systems do not support multi-user transaction processing.
Database systems do not support multi-user transaction processing.
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OLTP allows only a single transaction to execute per second.
OLTP allows only a single transaction to execute per second.
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Database users can be divided into only two categories.
Database users can be divided into only two categories.
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The recovery subsystem ensures that transactions are only temporarily recorded in the database.
The recovery subsystem ensures that transactions are only temporarily recorded in the database.
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