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Clavita Pharma Interview Questions and Answers

Updated 22 Mar 2024

Q1. What are strings in java? What are the different ways to create a string ?

Ans.

Strings in Java are sequences of characters. They are immutable objects and can be created using string literals or the new keyword.

  • Strings can be created using string literals: String str = "Hello";

  • Strings can also be created using the new keyword: String str = new String("World");

  • Strings can be concatenated using the + operator: String result = str1 + str2;

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Q2. What is Data Modelling

Ans.

Data modelling is the process of creating a conceptual representation of data and its relationships.

  • It involves identifying entities, attributes, and relationships between them.

  • It helps in designing efficient databases and improving data quality.

  • Examples include ER diagrams, UML diagrams, and data flow diagrams.

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Q3. What are collections in java ?

Ans.

Collections in Java are frameworks that provide an architecture to store and manipulate a group of objects.

  • Collections provide interfaces (List, Set, Map) and classes (ArrayList, HashSet, HashMap) to store and manipulate groups of objects.

  • Collections framework includes algorithms to manipulate collections, such as sorting, searching, and shuffling.

  • Collections in Java are part of the Java Collections Framework (JCF) and provide dynamic arrays, linked lists, hash tables, trees,...read more

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Q4. Components of Power bi,

Ans.

Power BI is a business analytics service by Microsoft that provides interactive visualizations and business intelligence capabilities.

  • Power Query for data transformation

  • Power Pivot for data modeling

  • Power View for data visualization

  • Power Map for geospatial data visualization

  • Power Q&A for natural language query

  • Power BI Desktop for report authoring

  • Power BI Service for sharing and collaboration

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Q5. What is Power Pivot

Ans.

Power Pivot is a data modeling tool in Excel that allows users to create relationships and analyze large data sets.

  • Power Pivot is an add-in for Microsoft Excel.

  • It allows users to create data models and relationships between tables.

  • Users can analyze large data sets with fast performance.

  • It supports advanced calculations and data analysis functions.

  • Power Pivot can handle millions of rows of data.

  • It is commonly used for business intelligence and data analysis tasks.

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Q6. Building blocks of power bi

Ans.

Power BI building blocks include data sources, data transformations, data modeling, and visualizations.

  • Data sources: Connect to various data sources such as Excel, SQL Server, and SharePoint.

  • Data transformations: Clean and transform data using Power Query Editor.

  • Data modeling: Create relationships between tables and define measures and calculated columns.

  • Visualizations: Create interactive reports and dashboards using various visualizations such as charts, tables, and maps.

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