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CompTIA DA0-001 Exam - Topic 2 Question 27 Discussion

Actual exam question for CompTIA's DA0-001 exam
Question #: 27
Topic #: 2
[All DA0-001 Questions]

A database consists of one fact table that is composed of multiple dimensions. Each dimension is represented by a denormalized table. This structure is an example of a:

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Suggested Answer: D

A star schema is a type of database schema that consists of one fact table and multiple dimension tables. The fact table contains the measures or metrics of the business process, such as sales, orders, or transactions. The dimension tables contain the attributes or characteristics of the business entities, such as products, customers, or locations. The fact table is connected to the dimension tables by foreign keys that reference the primary keys of the dimension tables.The fact table is located at the center of the schema, while the dimension tables are located at the edges, forming a star-like shape1.

A star schema is an example of a denormalized schema, which means that the dimension tables are not normalized and may contain redundant or repeated data. This is done to improve the performance and simplicity of queries, as there are fewer joins and tables involved.A star schema is suitable for data warehouses and business intelligence applications that require fast and efficient data retrieval2.


by Fletcher at Feb 13, 2024, 03:37 AM

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Rhea
3 months ago
Really? I thought snowflake was the right answer!
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Cecilia
3 months ago
No way, it's clearly a star schema.
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Andree
3 months ago
Wait, isn't it more like a galaxy schema?
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Thomasena
4 months ago
Agreed, the denormalized tables fit that description.
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Cecily
4 months ago
It's definitely a star schema!
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Alberta
4 months ago
I definitely recall that a star schema has a central fact table, so I’m leaning towards option D.
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Rossana
4 months ago
I'm a bit confused; could it also be a galaxy schema? I feel like I need to review the differences again.
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Rodolfo
4 months ago
I remember practicing a question like this, and I think the denormalized tables point towards a star schema.
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Casie
5 months ago
I think this might be a star schema since it has a fact table and denormalized dimensions, but I'm not completely sure.
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Tequila
5 months ago
I'm pretty confident this is a star schema. The fact table with multiple dimension tables is the textbook definition of a star schema in a data warehouse. I'll mark that as my answer.
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Tori
5 months ago
Okay, I've seen this type of schema before. It's definitely a snowflake schema, not a star schema. The denormalized dimension tables are a key characteristic of the snowflake design.
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Lorrie
5 months ago
Hmm, I'm not totally sure about this one. The question mentions a "non-relational schema" which makes me wonder if it could be a galaxy schema or something else. I'll have to think this through carefully.
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Curtis
5 months ago
I think this is a star schema question. The fact table with multiple denormalized dimension tables sounds like the classic star schema structure.
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Gerald
5 months ago
Based on the question, I think the roles needed are A and B. They seem to be the ones specifically related to importing financial data and software spend detection, which is what the question is asking about.
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Roy
5 months ago
This looks like a straightforward routing question. I'll carefully examine the network diagram and the options to determine the next-hop address.
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Ilene
5 months ago
This seems like a straightforward question about the source of the given passage. I'll carefully read through the options and think about the context clues in the passage to determine the most likely answer.
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Leota
5 months ago
Hmm, I'm a bit confused. Does the $300 he paid for the option factor into the minimum price the stock needs to trade at?
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Malissa
5 months ago
Okay, let me see... I think restructuring is the right answer, but I'm not 100% sure.
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Nieves
2 years ago
I think it's A) non-relational schema because it doesn't follow the relational model.
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Renato
2 years ago
I'm leaning towards C) snowflake schema because it has normalized dimensions.
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Aretha
2 years ago
I disagree, I believe it is D) star schema.
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Dyan
2 years ago
I think the answer is B) galaxy schema.
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Martin
2 years ago
Definitely star schema. The other options like non-relational schema and snowflake schema don't quite fit the description provided.
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Jess
2 years ago
Yeah, the star schema is a type of dimensional modeling approach where you have a central fact table surrounded by dimension tables. This allows for efficient querying and analysis.
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Pauline
2 years ago
I agree, the star schema is the correct answer here. The fact table with multiple denormalized dimension tables is a classic star schema design.
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Leana
2 years ago
Hmm, this question seems like it's testing our knowledge of database design patterns. Based on the description, I think the answer is D) star schema.
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