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MCQs

Total Questions : 30 | Page 1 of 3 pages
Question 1. A data warehouse uses:
  1.    partial operational data.
  2.    historical operational data.
  3.    health care data.
  4.    future operational data.
 Discuss Question
Answer: Option B. -> historical operational data.
Question 2. Metadata enables database designers and users to do all of the following except:
  1.    understand what data exist.
  2.    what the data mean.
  3.    sample data.
  4.    what the fine distinctions are between similar data items.
 Discuss Question
Answer: Option C. -> sample data.
Question 3. A database management system (DBMS) is a:
  1.    software system used to create, maintain, and provide controlled access to a database.
  2.    hardware system used to create, maintain, and provide uncontrolled access to a database.
  3.    hardware system used to create, maintain, and provide controlled access to a database.
  4.    software system used to create, maintain, and provide uncontrolled access to a database.
 Discuss Question
Answer: Option A. -> software system used to create, maintain, and provide controlled access to a database.
Question 4. Legacy data is which of the following?
  1.    Data contained in a newly-installed system
  2.    Data contained by a system used prior to the installation of a new system
  3.    Data contained in a file system
  4.    Data rejected during the installation of a new system
 Discuss Question
Answer: Option B. -> Data contained by a system used prior to the installation of a new system
Question 5. Duplicate data often results in loss of data integrity because:
  1.    data values may not agree.
  2.    Both A &
  3.    Neither A &
  4.    the data formats may be inconsistent.
 Discuss Question
Answer: Option B. -> Both A &
Question 6. A database application can perform which of the following activities?
  1.    Update records
  2.    All of these
  3.    Read records
  4.    Add records
 Discuss Question
Answer: Option B. -> All of these
Question 7. Data administrators are responsible for:
  1.    writing application programs.
  2.    overall management of data resources in an organization.
  3.    physical database design.
  4.    managing technical issues in the database environment.
 Discuss Question
Answer: Option B. -> overall management of data resources in an organization.
Question 8. A shared database should:
  1.    be accurate and available.
  2.    All of these
  3.    provide for backup and recovery.
  4.    be secure.
 Discuss Question
Answer: Option B. -> All of these
Question 9. An enterprise data model is:
  1.    a graphical model that shows the high-level entities for an organization.
  2.    a non-graphical model that shows the all entities for an organization.
  3.    a graphical model that shows all entities for an organization.
  4.    a non-graphical model that shows the high-level entities for an organization.
 Discuss Question
Answer: Option A. -> a graphical model that shows the high-level entities for an organization.
Question 10. Which of the following types of databases are the most common?
  1.    Department
  2.    Personal
  3.    Enterprise
  4.    Workgroup
 Discuss Question
Answer: Option A. -> Department

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