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Database
The Database Environment
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Q.1
Data descriptions are stored in a central location called the depository.
True
False
Q.2
Stored representations of objects and events that have meaning and importance in the user's environment are known as a database.
True
False
Q.3
Another name for multimedia data is unstructured data.
True
False
Q.4
The most common source of database failures in an organization is the failure to implement a strong database administration function.
True
False
Q.5
The primary mechanism for providing context for data is metadata.
True
False
Q.6
A workgroup typically comprises between 25 and 100 persons.
True
False
Q.7
The source of the data is sometimes called the system of record.
True
False
Q.8
Data quality problems currently cost U.S. businesses some $60 million each year (Hudica, 2003).
True
False
Q.9
Stand-alone databases exhibit many of the same advantages common to file processing systems.
True
False
Q.10
The database approach requires additional costs and risks.
True
False
Q.11
All enterprise resource planning (ERP) systems are heavily dependent on databases to store the data required by the ERP applications.
True
False
Q.12
Which of the following is true for a relational database?
Data is represented by tables.
It is difficult to access data.
Complex programs have to be written for simple queries.
All of the above.
Q.13
Some advantages of the database approach include all, but:
minimal data redundancy.
improved data consistency.
improved data sharing.
program-data dependency.
Q.14
An enterprise database is which of the following?
A database designed to support only users external to an organization
A database designed to support an entire organization
A database designed to support a relatively small group
A database designed to support a single PC
Q.15
Database management systems were first introduced in the 1950s.
True
False
Q.16
Databases that contain historical and summarized information are usually called data warehouses.
True
False
Q.17
Structured data may include which of the following?
Photo image
Video clip
Dates
None of the above
Q.18
An extranet is which of the following?
The use of Internet protocols with limited access to company data by the company's customers and suppliers.
The use of Internet protocols with unlimited access to company data by the company's customers and suppliers.
The use of Internet protocols with limited access to company data by people within an organization.
The use of Internet protocols with unlimited access to company data by people within an organization.
Q.19
An advantage of the database approach is the creation of maximum data redundancy.
True
False
Q.20
An enterprise data model is a relational model that shows the high-level entities for the organization and associations among those entities.
True
False
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