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Oracle Business Intelligence Foundation Suite 11g Essentials Sample Questions (Q65-Q70):

NEW QUESTION # 65
A customer would like to create a change and a % Change for Revenue at the same time. How would they accomplish this?

A. Defining them in the physical data model
B. Defining them in the Presentation Layer
C. Using the Expression Builder
D. Using the Calculation Wizard

Answer: D

Explanation:
After creating your base metrics, try using the Calculation Wizard to automate the process of creating time- series metrics or comparison metrics such as: Change, Percent Change, Index, and Percent. The Wizard may save you many hours of time and frustration, especially if you have to create more than a handful of these metrics. In addition, the Wizard allows you to include customized logic to handle nulls in the base metrics.
You may refer to the Oracle documentation for further detail.

NEW QUESTION # 66
Identify the reason why Oracle OLAP provides a favorable aggregation strategy.

A. OLAP cubes eliminate the need for a large number of aggregate tables.
B. OLAP cubes can be queried by using SQL.
C. OLAP cubes are stored outside of the database in highly optimized file structures.
D. OLAP cubes can be easily transported from database to database.

Answer: B

Explanation:
All metadata for cubes and dimensions is stored in the Oracle database and revealed in the data dictionary views, so that you can query the entire business model in SQL.
Reference: Oracle OLAP User's Guide, What's New in Oracle OLAP?

NEW QUESTION # 67
A customer wants to analyze the efficiency of his/her order fulfillment process. If the customer has a dimensional model, which option is the fact table?

A. Time
B. Products
C. Orders
D. Stores

Answer: C

NEW QUESTION # 68
Which variable does not use initialization blocks to initialize its values?

A. Dynamic Repository Variable
B. System Variable
C. Non System Variable
D. Static Repository Variable

Answer: D

Explanation:
Explanation/Reference:
The value of a static repository value is initialized in the Variable dialog box. This value persists, and does not change until an Oracle BI Administrator decides to change it.
Incorrect answers:
B, C, D: Initialization blocks are used to initialize dynamic repository variables, system session variables, and nonsystem session variables.
Reference; OBI Server Administration Server Guide, Version 10.1, Static Repository Variables

NEW QUESTION # 69
How will you model a Type II Slowly-Changing Dimension?

A. Do Nothing
B. Overwrite an existing dimension table record with the changed record
C. Add an additional column to the dimension table to capture a version of change
D. Add a new row to the dimension table with a new key for the changed record

Answer: D

Explanation:
Explanation
Dimensional Modeling - Slowly Changing Dimensions
* Type 1 - Overwrite Original Value
A change does not require tracking
* Type 2 - Add a new record
With Type II SCD, a new version of the dimension record (row) is created, and the existing version is marked as history.
Each row does not correspond to a different instance of an entity but a different "state", a "snapshot" of the instance at a point in time.
Note: Tracking changes in dimension is referred in datawarehousing as slowly changing dimensions.
In the source system a lot of changes are daily made :
new customers are added,
addresses are modified,
new regional hierarchies are implemented,
or simply the product descriptions and packaging change.
These sorts of changes need to be reflected in the dimension tables and in several cases, the history of the changes also needs to be tracked.
By remembering history, we are then able to look at historical data and compare it to their current situation.

NEW QUESTION # 70
......

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