Quiz Discussion

A data warehouse is which of the following?

• 1]

  Can be updated by end users

• 2]

  Contains numerous naming conventions and formats

• 3]

  Organized around important subject areas

• 4]

  Contains only current data

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

Reconciled data is which of the following?

• 1]

  Data stored in the various operational systems throughout the organization

• 2]

  Current data intended to be the single source for all decision support systems

• 3]

  Data stored in one operational system in the organization

• 4]

  Data that has been selected and formatted for end-user support applications

The generic two-level data warehouse architecture includes which of the following?

• 1]

  At least one data mart

• 2]

  Data that can be extracted from numerous internal and external sources

• 3]

  Near real-time updates

• 4]

  All of the above

A database application can perform which of the following activities?

• 1]

  Add records

• 2]

  Update records

• 3]

  Read records

• 4]

  All of the above

An operational system is which of the following?

• 1]

  A system that is used to run the business in real-time and is based on historical data

• 2]

  A system that is used to run the business in real-time and is based on current data

• 3]

  A system that is used to support decision making and is based on current data

• 4]

  A system that is used to support decision making and is based on historical data

The load and index are 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 before it is moved into a data warehouse

• 4]

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

A data warehouse uses

• 1]

  partial operational data

• 2]

  future operational data

• 3]

  historical operational data

• 4]

  health care data

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

A database management system (DBMS) is a

• 1]

  hardware system used to create, maintain and provide controlled access to a database

• 2]

  a software system used to create, maintain and provide controlled access to a database

• 3]

  hardware system used to create, maintain, and provide uncontrolled access to a database

• 4]

  a software system used to create, maintain, and provide uncontrolled access to a database