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Clavita Pharma Interview Questions and Answers
Q1. What are strings in java? What are the different ways to create a string ?
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;
Q2. What is Data Modelling
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.
Q3. What are collections in java ?
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
Q4. Components of Power bi,
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
Q5. What is Power Pivot
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.
Q6. Building blocks of power bi
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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