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41) Access a: A) DBMS for small handheld computing devices. B) popular

Question : 41) Access a: A) DBMS for small handheld computing devices. B) popular : 1927946

41) Access is a:

A) DBMS for small handheld computing devices.

B) popular open-source DBMS.

C) DBMS for midrange computers.

D) DBMS for desktop systems.

42) In clustering, a data mining tool will:

A) find new groupings within data.

B) find related predictions from existing values.

C) find several events grouped by time.

D) find new associations.

43) MySQL is a:

A) DBMS for small handheld computing devices.

B) popular open-source DBMS.

C) mainframe relational DBMS.

D) DBMS for desktop systems.

44) Data mining is more ________ than OLAP.

A) data focused

B) multidimensional

C) query oriented

D) discovery driven

45) In a relational database, the three basic operations used to develop useful sets of data are:

A) select, project, and where.

B) select, join, and where.

C) select, project, and join.

D) select, from, and join.

46) The select operation:

A) combines relational tables to provide the user with more information than is otherwise available.

B) creates a subset consisting of columns in a table.

C) identifies the table from which the columns will be selected.

D) creates a subset consisting of all records in the file that meets stated criteria.

47) The join operation:

A) combines relational tables to provide the user with more information than is otherwise available.

B) identifies the table from which the columns will be selected.

C) creates a subset consisting of columns in a table.

D) organizes elements into segments.

48) The project operation:

A) combines relational tables to provide the user with more information than is otherwise available.

B) creates a subset consisting of columns in a table.

C) organizes elements into segments.

D) identifies the table from which the columns will be selected.

49) Which of the following best describes the importance of creating an accurate data model for your business's database?

A) It is not essential, as the data model itself is modified by the database continuously.

B) Critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieve.

C) Essential, as table relationships cannot be created without an accurate data model.

D) Somewhat important, as the type of data model will define what kinds of data will be stored.

50) An automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security is the:

A) data dictionary.

B) data definition diagram.

C) entity-relationship diagram.

D) relationship dictionary.

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