Databricks Certified Data Analyst Associate Exam - Topic 2 Question 15 Discussion

A data analyst creates a Databricks SQL Query where the result set has the following schema:region STRINGnumber_of_customer INTWhen the analyst clicks on the "Add visualization" button on the SQL Editor page, which of the following types of visualizations will be selected by default?

B) Line Chart

A) Violin Chart

C) IBar Chart

D) Histogram

E) There is no default. The user must choose a visualization type. According to the Databricks SQL documentation, when a data analyst clicks on the ''Add visualization'' button on the SQL Editor page, the default visualization type isBar Chart. This is because the result set has two columns: one of type STRING and one of type INT. The Bar Chart visualization automatically assigns the STRING column to the X-axis and the INT column to the Y-axis. The Bar Chart visualization is suitable for showing the distribution of a numeric variable across different categories.Reference:Visualization in Databricks SQL,Visualization types

Databricks Certified Data Analyst Associate Exam - Topic 2 Question 15 Discussion

Actual exam question for Databricks's Databricks Certified Data Analyst Associate exam

Question #: 15
Topic #: 2

[All Databricks Certified Data Analyst Associate Questions]

A data analyst creates a Databricks SQL Query where the result set has the following schema:

region STRING

number_of_customer INT

When the analyst clicks on the "Add visualization" button on the SQL Editor page, which of the following types of visualizations will be selected by default?

AViolin Chart

BLine Chart

CIBar Chart

DHistogram

EThere is no default. The user must choose a visualization type.
According to the Databricks SQL documentation, when a data analyst clicks on the ''Add visualization'' button on the SQL Editor page, the default visualization type isBar Chart. This is because the result set has two columns: one of type STRING and one of type INT. The Bar Chart visualization automatically assigns the STRING column to the X-axis and the INT column to the Y-axis. The Bar Chart visualization is suitable for showing the distribution of a numeric variable across different categories.Reference:Visualization in Databricks SQL,Visualization types

Show Suggested Answer

Suggested Answer: B

In the provided SQL query, the data analyst is trying to count the number of customers in each region. However, they made a mistake by not including the ''GROUP BY'' clause to group the results by region. Without this clause, the query will not return counts for each distinct region but rather an error or incorrect result.Reference: The need for a GROUP BY clause in such queries can be understood from Databricks SQL documentation:Databricks SQL.

I also noticed that you uploaded an image with your question. The image shows a snippet of an SQL query written in plain text on a white background. The query is attempting to select regions and count customers from a ''customers'' table and order the results by region. There's no visible syntax highlighting or any other color - it's monochromatic. The query is the same as the one in your question. I'm not sure why you included the image, but maybe you wanted to show me the exact format of your query. If so, you can also use code blocks to display formatted content such as SQL queries. For example, you can write:

SELECT region, count(*) AS number_of_customers

FROM customers

ORDER BY region;

This way, you can avoid uploading images and make your questions more clear and concise. I hope this helps.

by Rebecka at May 28, 2024, 02:32 PM

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Emiko

9 months ago

No default? That's surprising, I always assumed there was one.

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Wendell

9 months ago

I thought it was a Line Chart by default, interesting!

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Bonita

9 months ago

Wait, is it really Bar Chart? Thought it could be different.

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Marica

10 months ago

Totally agree, makes sense for STRING and INT.

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Alyce

10 months ago

Default is Bar Chart for this schema!

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Alfred

10 months ago

From what I recall, the Bar Chart is indeed the default for this kind of schema, but I hope I’m not mixing it up with another visualization type!

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Mendy

10 months ago

I’m a bit confused; I thought there might be no default visualization and that the user had to select one.

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Janna

10 months ago

I remember practicing a similar question where the default was also a Bar Chart, so I’m leaning towards that answer.

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Billy

11 months ago

I think the default visualization is a Bar Chart because it fits the STRING and INT data types well, but I'm not completely sure.

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Beckie

11 months ago

I'm not sure about this one. The question seems straightforward, but I want to make sure I'm not missing any nuances. I'll review the Databricks SQL documentation again to make sure I have the right understanding before answering.

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Elden

11 months ago

Okay, let me think this through. The data has a STRING column and an INT column, so a Bar Chart makes sense as the default since it can easily represent the distribution of the numeric variable across the categories. I'll go with that.

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Telma

11 months ago

Hmm, I'm a bit confused. The options include some visualization types I'm not familiar with, like Violin Chart and IBar Chart. I'll need to double-check the Databricks SQL documentation to make sure I understand the correct default.

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Trevor

11 months ago

I'm pretty confident about this one. The question is asking about the default visualization type in Databricks SQL, and the documentation clearly states that it's a Bar Chart.

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Ricki

11 months ago

Hmm, I'm not sure about this one. I'll have to think it through carefully and try to eliminate the options that don't make sense.

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Macy

11 months ago

I'm a bit confused here. The question says the futures contract is trading at a higher price than the index, but the strategy involves selling the index short. Shouldn't that mean the futures contract is overpriced, not underpriced? I'll need to review this more carefully.

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Cyril

11 months ago

I feel pretty confident about this one. The key is to leverage the event-driven nature of Cloud Storage and Pub/Sub to trigger the training job as soon as new data is available. That way, you don't have to worry about manually checking for updates or setting up scheduled jobs.

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Craig

11 months ago

I don't think shippers can just stop anywhere without notice, which makes me doubt option D. It's a tough question!

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Gerardo

1 year ago

Default to Bar Chart, eh? That's about as exciting as a bowl of oatmeal. But hey, at least it's not a Scatter Plot - that would just be plain wrong for this data.

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Davida

1 year ago

True, at least it's not a Scatter Plot - that would be totally off for this data.

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Janessa

1 year ago

I guess we could always change it to something more interesting if needed.

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Louis

1 year ago

Yeah, it's not the most exciting choice, but it makes sense for the data.

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Elenor

1 year ago

Bar Chart is the default visualization type for that schema.

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Tammy

1 year ago

Bar Chart, huh? Sounds like a solid choice. Now if only I could figure out how to make it dance and sing like the charts in my dreams.

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Glory

1 year ago

Well, at least it's not the dreaded Pie Chart! I'm glad Databricks steers us away from that one by default.

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Emeline

1 year ago

User 3: Agreed, Pie Chart can be misleading sometimes.

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Paulene

1 year ago

User 2: Yeah, Bar Chart makes sense with the schema we have.

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Latrice

1 year ago

User 1: I'm glad Databricks defaults to Bar Chart for the visualization.

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Jannette

1 year ago

Hmm, a Bar Chart makes sense for this data, but I wonder if a Line Chart could also work to show trends over time? I'll have to explore the options.

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Tina

1 year ago

Yes, exploring the options is a good idea to find the best visualization.

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Jerry

1 year ago

A Line Chart could work for showing trends over time.

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Chun

1 year ago

Bar Chart is the default visualization for this schema.

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Maryann

1 year ago

I'm not sure, but I think the default visualization might be Line Chart.

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Cherelle

1 year ago

I've used Bar Charts before, so this seems like the obvious choice. Glad Databricks defaults to something familiar.

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Earleen

1 year ago

User 4: It's great that Databricks makes it easy to visualize data with a familiar option like Bar Chart.

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Fabiola

1 year ago

User 3: I find Bar Charts easy to interpret, so I'm happy with that default.

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Mickie

1 year ago

User 2: Agreed, it's nice when the default option makes sense.

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Loise

1 year ago

User 1: Bar Chart is a good default choice for this schema.

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Rosendo

1 year ago

I agree with Oretha. The Bar Chart is suitable for the schema provided.

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Oretha

1 year ago

I think the default visualization type will be Bar Chart.

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