Q. In a star schema, what type of table is the central fact table surrounded by?
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A.
Dimension tables
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B.
Normalization tables
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C.
Transaction tables
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D.
Index tables
Solution
In a star schema, the central fact table is surrounded by dimension tables that provide context to the data.
Correct Answer:
A
— Dimension tables
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Q. In a star schema, what type of table is the central fact table?
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A.
Dimension table
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B.
Lookup table
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C.
Aggregate table
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D.
Fact table
Solution
In a star schema, the central table is the fact table, which contains quantitative data for analysis.
Correct Answer:
D
— Fact table
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Q. What is a transaction in the context of a database?
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A.
A single SQL command
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B.
A sequence of operations treated as a single unit
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C.
A backup of the database
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D.
A method of data retrieval
Solution
A transaction is a sequence of operations that are executed as a single unit of work.
Correct Answer:
B
— A sequence of operations treated as a single unit
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