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Exam : IBM COG-132
Title : IBM Cognos 8 BI Metadata Model Developer
1. Which of the following data structures typically contain normalized data?
A. Cube
B. Flat file
C. Operational
D. Star schema
Answer: C
2. What does a star schema database structure typically consist of?
A. De-normalized hierarchy of dimension tables and fact tables.
B. Normalized dimension tables and detailed fact tables.
C. Normalized dimension tables and summarized fact tables.
D. De-normalized dimension tables and fact tables.
Answer: D
3. Which of the following is true regarding the operational data structure illustrated below?
A. It illustrates a parallel relationship.
B. It should be consolidated into one table.
C. It should be examined for a connection trap.
D. The cardinality between the tables should be reversed.
Answer: C
4. The illustration below represents which of the following data traps?
A. Bridge
B. Connection
C. Parallel relationship
D. Many-to-many relationship
Answer: C
5. Which of the following is true of an OLAP data structure?
A. Comprised of normalized dimension and fact tables.
B. Organizes dimension tables into hierarchies and levels.
C. Allows "real time" analysis against disparate data sources.
D. Cardinality between tables is typically configured as inner joins.
Answer: B
6. In a transitive relationship scenario, what problems exist when reporting from the tables below?
A. The Order table must be included in each query.
B. The Order Detail table has conflicting cardinalities.
C. Outer joins are generated when querying from Customer.
D. There is more than one possible path between the tables.
Answer: D
7. What question should a data modeler answer before accepting this proposed operational data structure?
A. Should all three tables be consolidated into one?
B. Should the cardinalities between the tables be reversed?
C. Are Branch and Employee dimension tables or fact tables?
D. Is there a direct relationship between Branch and Employee?
Answer: D
8. The database table below would typically be found in what data structure?
A. Union
B. Normalized
C. Operational
D. Star schema
Answer: D
相关科目
COG-132
COG-105
COG-112