A star schema has what type of relationship between a dimension and fact table? One-to-one Many-to-many All of these One-to-many TRUE ANSWER : ? YOUR ANSWER : ?
A snowflake schema is which of the following types of tables? All of these Fact Dimension Helper TRUE ANSWER : ? YOUR ANSWER : ?
Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW. True False TRUE ANSWER : ? YOUR ANSWER : ?
Reconciled data is which of the following? Current data intended to be the single source for all decision support systems. Data stored in one operational system in the organization. Data that has been selected and formatted for end-user support applications. Data stored in the various operational systems throughout the organization. TRUE ANSWER : ? YOUR ANSWER : ?
The @active data warehouse architecture includes which of the following? All of these At least one data mart Near real-time updates Data that can extracted from numerous internal and external sources TRUE ANSWER : ? YOUR ANSWER : ?
The role of the ETL process is to identify erroneous data and to fix them. False True TRUE ANSWER : ? YOUR ANSWER : ?
The load and index is which of the following? A process to upgrade the quality of data before it is moved into a data warehouse A process to load the data in the data warehouse and to create the necessary indexes A process to reject data from the data warehouse and to create the necessary indexes A process to upgrade the quality of data after it is moved into a data warehouse TRUE ANSWER : ? YOUR ANSWER : ?
Successful data warehousing requires that a formal program in total quality management (TQM) be implemented. False True TRUE ANSWER : ? YOUR ANSWER : ?
Both status data and event data can be stored in a database. True False TRUE ANSWER : ? YOUR ANSWER : ?
A data mart is designed to optimize the performance for well-defined and predicable uses. True False TRUE ANSWER : ? YOUR ANSWER : ?