Visionet Systems Interview Questions

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Data Structures & Algorithms
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Visionet Systems Interview Questions

Practice for the Visionet Systems interview with these recently asked interview questions.

QuestionTopicDifficulty
SQL
Hard

We’re given a table of bank transactions with three columns, user_id, a deposit or withdrawal value (determined if the value is positive or negative), and created_at time for each transaction.

Write a query to get the total three-day rolling average for deposits by day.

Note: Please use the format '%Y-%m-%d' for the date in the outout

Example:

Input:

bank_transactions table

Column Type
user_id INTEGER
created_at DATETIME
transaction_value FLOAT

Output:

Column Type
dt VARCHAR
rolling_three_day FLOAT
SQL
Easy
SQL
Easy
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Visionet Systems Salaries by Position

$101K
$113K
Data Scientist
Median: $101K
Mean (Average): $105K
Data points: 3
$65K
$101K
Software Engineer
Median: $90K
Mean (Average): $87K
Data points: 30
$58K
$94K
Business Analyst
Median: $69K
Mean (Average): $73K
Data points: 151

Most data science positions fall under different position titles depending on the actual role.

From the graph we can see that on average the Data Scientist role pays the most with a $104,970 base salary while the Business Analyst role on average pays the least with a $72,945 base salary.

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