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Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.

The company has been consistently growing new users in the city from January to March.

What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

V2Soft Salaries by Position

V2Soft (www.v2soft.com) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, Italy, India, China and Germany. At V2Soft, our mission is to provide high performance technology solutions to solve real business problems. We become our customer's true partner, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace, and believe it has a positive effect on our company and the customers we serve.Roll Summary:The "Client Group Dealer Service Technology Coordinator" is a knowledgeable in the automotive after sales service domain. This candidate must understand and embrace the vision of an executive sponsored digital flagship program (Elsa2Go), which is designed to grow the dealership service and parts business by revolutionizing the dealer retail workflow with the use of innovative technology.The role is responsible for supporting the Service Technology Specialist in the development and execution of new agile project scope from various points of view (customer, dealer, corporate, brand stakeholders), as well as be accountable for a successful partner relationship with Client and Audi brand after sales teams project executionRole Responsibilities:Be Agile* Documents user stories & requirements for the program* Monitors feedback and coordinate resolutions* Develops and execute test cases part of UAT* Adapts to constant change and understands how to be agile* Create presentations, product documentation, and other materials, as part of acting as an information expert for your productsBe Visionary* Develops and maintains a vision for product features and communicates that vision across various stakeholders* Develops and optimize industry leading business processes* Creates reporting to mark trends and identify potential system improvements* Introduces the leading-edge features to the product* Identify patterns in feedback to quickly identify growing issues* Responsible for quantifying the ROI for these new technologies and developing business cases for budget consideration* Assess value, develop use cases, and prioritize user stories, epics and themes. Focuses on maximum value and alignment with program strategy.Be Collaborative* Understands brand impact and makes scope decisions to maximize the return on investment* Work across teams to resolve system issues or feedback* Defines clear acceptance criteria for each program feature* Understands complex technical concepts and presents them in simple terms to non- technical team membersUnderstands end-to-end processes. Manages requirements dependencies.Skills:* Excellent cross-functional communication* Superb presentation* Ability to organize data for presentations at the executive level* Quality driven and reliable - high attention to detail* Strong analytical and problem-solving skills* Effective operational organization, time management & planning* Program & Project execution. Efficient and effective solution delivery* Adaptive planning & flexibility - ability to respond to change, report progress, and stick to a plan* Skilled in the use of software, business intelligence and analytics* Strong computer skills, Excel, Word, Power PointSpecialized skills, knowledge or certifications unique to this role Required:* Previous working experience with Agile Methodologies* Hands on experience authoring and refining user stories, grooming product backlogs, and prioritizing conflicting requirements.* Strong Dealership Service process knowledgeDesired:* German language knowledge* Client or Audi service information experience* UX design experience* Experience with Client service applications and systemsEducation Required:Bachelor Degree in Business Management, Computer Science, Automotive Management, or related discipline, or equivalent work experience is requiredDesired:Master's degree or equivalent is desirableV2Soft is an Equal Opportunity Employer ( EOE).https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft ([ www.v2soft.com) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, Italy, India, China and Germany. At V2Soft, our mission is to provide high performance technology solutions to solve real business problems. We become our customer's true partner, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace, and believe it has a positive effect on our company and the customers we serve. Essential Job Functions: Responsibilities: ](http://www.v2soft.com) Design and implementation of complex cloud solutions using Microsoft Azure, focusing on integration with Databricks and Azure Data Factory. Develop and maintain scalable and efficient data pipelines and architectures. Ensure optimal architecture and performance of applications deployed on Azure. Provide expertise in cloud security, ensuring compliance with industry standards and company policies. Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions. Manage the full lifecycle of data and analytics solutions, from requirements gathering to deployment and maintenance. Other Responsibilities: Conduct system troubleshooting and provide technical support as needed. Stay updated with the latest developments in cloud technologies and introduce innovations and improvements to internal systems. Minimum Qualifications and Job Requirements: Bachelor's degree in science, Technology, Engineering, or Mathematics. 7 years of experience as a data engineer, with strong proficiency in Azure cloud services, Databricks, and Azure Data Factory 3 years of experience with designing and implementing data solutions using Azure Cloud. Azure Data Engineering or Databricks Certification. Strong knowledge of programming languages such as Python, SQL, or Scala. Experience with data modeling, ETL/ELT development, data integration and orchestration techniques Experience with designing and developing end-to-end data and analytics solutions leveraging Azure Data Lake, Azure Databricks, and Data Factory Nice to Have: Experience with designing scalable data analytics architecture to implement advanced analytics solutions, including machine learning and AI, to extract actionable insights from data. Additional Azure Certifications like Azure Client, Analytics Specialty, or Azure Solutions Architect. V2Soft is an Equal Opportunity Employer ( EOE). https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft ([ www.v2soft.com) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, Italy, India, China and Germany. At V2Soft, our mission is to provide high performance technology solutions to solve real business problems. We become our customer's true partner, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace, and believe it has a positive effect on our company and the customers we serve. Essential Job Functions: ](http://www.v2soft.com) Meet with business and understand current system, and capture the gap to plan out week/month and establish the build schedules Oversee the build schedules and make sure the SLAs are being followed Work with management and business to provide progress and make sure there is no scope creep. Work with developer to capture the requirements in JIRA, Translate the business needs into technical requirements. Keep track of the system flow and the build meets the requirements. Review Feature Request and Defect JIRAs to for completeness and consistency. Meet with customer once a week during weekly status meeting Run weekly requirement/document sessions to update and get approval on WIKI/requirement/process documentation Other Responsibilities: Meet with business maintenance road maps Meet with business to outline current status, successes, challenges, risks and issues Support bi-weekly code rolls and QA efforts Sprint planning and management. Minimum Qualifications and Job Requirements: Minimum 2 years of experience in technical project management. Fluency in communication. V2Soft is an Equal Opportunity Employer ( EOE). https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft ( www.v2soft.com ) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, Italy, India, China, and Germany. At V2Soft, our mission is to provide high-performance technology solutions to solve real business problems. We become our customer's true partners, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace and believe it has a positive effect on our company and the customers we serve. Job Description: Work with stakeholders and development team to determine project scope and vision, gather and prioritize collected requirements. Designing and Implementing Data Architectures: Develop comprehensive data architectures that support the organization's business goals, using Azure Synapse Analytics, Azure SQL, and other Azure data services. Managing Dedicated SQL Pools: Efficiently manage and optimize Dedicated SQL Pools in Synapse to handle large-scale data warehousing and analytics workloads. Database Design and Management: Design, implement, and manage databases using Azure SQL and Azure Managed Instance, ensuring high performance, availability, and security. Data Integration and ETL Processes: Develop and manage ETL (Extract, Transform, Load) processes using Synapse Pipelines, ensuring efficient data flow from various sources to the data warehouse. Data Governance and Cataloging: Implement data governance practices and manage the data catalog to ensure data quality, consistency, and accessibility. Building and Maintaining Data Models: Create and maintain data models that accurately represent the data landscape, ensuring they are scalable and optimized for performance. Ensuring Data Security and Compliance: Implement and oversee data security measures, ensuring compliance with legal and regulatory standards. Maintain procedures manuals and system documentation. Research software solutions to support recommendations, analyzing current and future technology trends. These positions are to provide technical guidance and expertise in supporting the department in developing, architecting, and maintaining data, data mappings, and monitoring high-volume complex data transfer processes. Specific Knowledge, Skills, and Abilities (KSAs): The submitted candidate must be able to apply common knowledge, skills, and abilities in the following areas: Minimum Required KSAs: 4 years of experience in Synapse Analytics, Dedicated SQL Pools, Azure SQL Database, and Azure Managed Instance. 5 years of experience in DDL, DML T-SQL skills, advanced stored procedure writing skills, tables, primary keys, foreign keys, constraints, indexes, transactions, process logging, and error handling. 4 years of experience in data architecture design principles, methodologies, and best practices. 3 years of experience in data governance principles and compliance requirements related to data security and privacy. 3 years of experience in integrating data from various sources and managing large data pipelines. 2 years of experience in cloud computing concepts, particularly in Microsoft Azure, including storage solutions and compute capabilities. 1 years of Experience with programming languages such as Python or Scala. 1 years of experience in Salesforce, Message MQ, and MuleSoft Strong analytical and problem-solving skills to address complex data challenges. Ability to design and implement robust, scalable, and efficient data architectures. Ability to provide excellent customer support; meticulous quality of work and work product. Education and Certifications: Education: Bachelor's or master's degree in computer science, Information Systems, or other related field. Or equivalent work experience. (Required) Certifications: Microsoft Dynamics 365 Certification (Desired) and MS Dynamics Power Platform Certifications (Desired) V2Soft is an Equal Opportunity Employer ( EOE). https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft (www.v2soft.com) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, India, Canada, France. At V2Soft, our mission is to provide high performance technology solutions to solve real business problems. We become our customer's true partner, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace, and believe it has a positive effect on our company and the customers we serve. 3 days in office/Hybrid Required Skills: 1.Dynatrace 2. Logscale, 3. Java 4. Microservices 5. Kafka 6. MongoDB Development Monitoring V2Soft is an Equal Opportunity Employer ( EOE). https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft ( www.v2soft.com ) is a global company, headquartered out of Bloomfield Hills, Michigan, with locations in Mexico, Italy, India, China, and Germany. At V2Soft, our mission is to provide high-performance technology solutions to solve real business problems. We become our customer's true partners, enabling both parties to enjoy success. We are committed to promoting diversity in the workplace and believe it has a positive effect on our company and the customers we serve. Job Description: Bachelor's degree in computer science, information systems, or other related field/equivalent work experience. A minimum of three (3) years of relevant technical or business work experience. A minimum of five (5) years of experience in Rapid prototyping business flows. A minimum of five (5) years of documenting requirements/traceability experience using a holistic requirements management tool. A minimum of five (5) years of system documentation experience. A minimum of five (5) years of experience in a Senior Digital Business Analyst, project management, or similar role. Understands the problem space from the business perspective. Proven computer skills in Microsoft suite including Excel, MS Access, PowerPoint, Word, Project, and Visio. Strong collaboration skills with the ability to lead, direct, and manage. Strong oral, analytical, and written communication skills. Strong analysis and documentation skills for creating End-to-End business scenarios for the development of test cases and execution. Strong analytical and industry relevant product management skills, including a thorough understanding of how to interpret customer business needs and translate them into operational requirements. Excellent verbal and written communication skills and the ability to interact professionally with a diverse group, executives, managers, and SMEs. Strong knowledge of web applications, client server applications, legacy applications, and database concepts. Strong project management skills including conceptualization, analysis, driving alignment, planning resources, and managing milestones. Agile/SCRUM experience specifically in Story/Acceptance criteria development. Knowledge of the interdependencies of key business processes, functions, and risks. Experience with ADO to plan and organize tasks, workflows, and reports for the Agile Team members. Must have extensive knowledge of the business domain, processes, and flow of the projects they are working on. Must have deep technical knowledge and understanding of the business requirements. V2Soft is an Equal Opportunity Employer ( EOE). https://www.v2soft.com/careers - to view all of our open opportunities and to learn more about our benefits.

V2Soft Interview Questions

V2Soft Interview Guides

V2Soft Interview Questions

V2Soft Salaries by Position

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