Table of Contents What is data visualization in Tableau? What is the difference between various BI tools and Tableau? What are different Tableau products? What is a parameter in Tableau? Tell me something about measures and dimensions? What are continuous and discrete field types? What is aggregation and disaggregation of data? What are the different […]

Table of Contents Can you create custom SQL functions or macros in Superset What databases does Superset support What are the different visualization types available in Superset What is Superset’s “Explore” feature How can you create interactive filters in Superset What are some security considerations when using Superset in a production environment Can you create […]

Write sql query to get the second highest salary among all employees? There are multiple ways to get the second highest salary among all employees. How can we retrieve alternate records from a table in oracle? Write sql query to find max salary and department name from each department. Write sql query to find records […]

What are the main features of Apache Spark? What is a Resilient Distribution Dataset in Apache Spark? What is a Transformation in Apache Spark? What are security options in Apache Spark? How will you monitor Apache Spark? What are the main libraries of Apache Spark? What are the main functions of Spark Core in Apache […]

What is the purpose of the Redshift REINDEX command Can you perform updates and deletes on tables in Amazon Redshift How can you take backups of Amazon Redshift clusters Can you use Redshift with AWS Identity and Access Management (IAM) for access control Can you run Redshift queries from third-party BI tools What is the […]

What is Apache Nifi? What is Nifi FlowFile? What is Relationship in Nifi DataFlow? What is Reporting Task? What is a Nifi Processor? Is there a programming language that Apache Nifi supports? How do you define Nifi content Repository? What is the Backpressure in Nifi system? What is the template in Nifi? What is the […]

How does Looker handle data integration How does Looker handle data lineage and impact analysis What is the purpose of Looker’s content validation feature Can Looker handle real-time data What is the purpose of a Looker dashboard What is the purpose of Looker’s “Always Use SQL Runner” option Can you explain the concept of a […]

How to do maintenance activity on the K8 node? How do we control the resource usage of POD? What are the various K8’s services running on nodes and describe the role of each service? What is PDB (Pod Disruption Budget)? What’s the init container and when it can be used? What is the role of […]

Mention what is Apache Kafka? Mention what is the traditional method of message transfer? Mention what is the benefits of Apache Kafka over the traditional technique? Mention what is the meaning of Broker in Kafka? Mention what is the Maximum Size of the Message does Kafka server can Receive? Explain what is Zookeeper in Kafka […]

How do I try Impala out? Does Cloudera offer a Vm for demonstrating Impala? How much Memory is required? What are the main features of Impala? What features from relational databases or hive are not available in Impala? Does Impala support Generic Jdbc? Is Avro supported? How do I Know how many Impala Nodes are […]