Quiz Discussion

A database application can perform which of the following activities?

Course Name: SQL -Structured Query Language

  • 1]

    Add records

  • 2]

    Update records

  • 3]

    Read records

  • 4]

    All of the above

Solution
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# Quiz
1
Discuss

Transient data is which of the following?

  • 1]

    Data in which changes to existing records cause the previous version of the records to be eliminated

  • 2]

    Data in which changes to existing records do not cause the previous version of the records to be eliminated

  • 3]

    Data that are never altered or deleted once they have been added

  • 4]

    Data that are never deleted once they have been added

Solution
2
Discuss

Legacy data is which of the following?

  • 1]

    Data contained in a newly-installed system

  • 2]

    Data contained in a file system

  • 3]

    Data rejected during the installation of a new system

  • 4]

    Data contained by a system used prior to the installation of a new system

Solution
3
Discuss

The extract process is which of the following?

  • 1]

    Capturing all of the data contained in various operational systems

  • 2]

    Capturing a subset of the data contained in various operational systems

  • 3]

    Capturing a subset of the data contained in various decision support systems

  • 4]

    Capturing all of the data contained in various decision support systems

Solution
4
Discuss

The active data warehouse architecture includes which of the following?

  • 1]

    At least one data mart

  • 2]

    Data that can extracted from numerous internal and external sources

  • 3]

    Near real-time updates

  • 4]

    All of the above

Solution
5
Discuss

An enterprise database is which of the following?

  • 1]

    A database designed to support only users external to an organization

  • 2]

    A database designed to support an entire organization

  • 3]

    A database designed to support a single PC

  • 4]

    A database designed to support a relatively small group

Solution
6
Discuss

Data scrubbing is which of the following?

  • 1]

    A process to reject data from the data warehouse and to create the necessary indexes

  • 2]

    A process to load the data in the data warehouse and to create the necessary indexes

  • 3]

    A process to upgrade the quality of data after it is moved into a data warehouse

  • 4]

    A process to upgrade the quality of data before it is moved into a data warehouse

Solution
7
Discuss

A data warehouse uses

  • 1]

    partial operational data

  • 2]

    future operational data

  • 3]

    historical operational data

  • 4]

    health care data

Solution
8
Discuss

An enterprise data model is

  • 1]

    a graphical model that shows the high-level entities for an organization

  • 2]

    a graphical model that shows all entities for an organization

  • 3]

    a non-graphical model that shows the high-level entities for an organization

  • 4]

    a non-graphical model that shows all entities for an organization

Solution
9
Discuss

Which of the following is true for a relational database?

  • 1]

    Data is represented by tables

  • 2]

    Complex programs have to be written for simple queries

  • 3]

    It is difficult to access data

  • 4]

    All of the above

Solution
10
Discuss

A star schema has what type of relationship between a dimension and fact table?

  • 1]

    One-to-one

  • 2]

    Many-to-many

  • 3]

    One-to-many

  • 4]

    All of the above

Solution
# Quiz