In Data Warehouses and Data Marts, Data Are Stored in a Multidimensional

question 28

Multiple Choice

In data warehouses and data marts, data are stored in a multidimensional structure which is sometimes visually represented as a 3-dimensional data cube. Figure 5.7 is an example of a data cube of sales with the dimensions of product, geographic area, and time period (year) . These are called business dimensions. What would the business dimensions be for Walmart's sales with its many sales transactions for many products in many stores that would allow them to do weekly analysis?

• A)Customer, product, and month
• B)Customer, product, store
• C)Customer, product, store, and month
• D)Customer, product, store, and week
• E)Product, store, and week

Recognize the importance of replication in the scientific process to verify the reliability of research findings.

Identify the strengths and limitations of case studies, particularly in studying individual or group behaviors in depth.

Appreciate the role of naturalistic observation in gathering data about behaviors in real-world settings.

Grasp the concept and application of meta-analysis in synthesizing results from multiple studies to draw broader conclusions.

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Definitions:

Precordial Electrode

Used in electrocardiography, positioned on the chest to record the electrical activity of the heart from different angles.

Intercostal Space

The anatomical space between two ribs, containing muscles, nerves, and blood vessels, significant in respiratory movement.

Sternum

The long, flat bone located in the center of the chest (breastbone) that connects to the ribs via cartilage, providing structural support to the thorax.

Electrocardiography

The process by which a graphic pattern is created to reflect the electrical impulses generated by the heart as it pumps.