Aparajitha Corporate Services Personnel Executive Interview Questions and Answers

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Q1. Write commands for DML
Ans. 
DML commands are used to manipulate data in a database. Examples include INSERT, UPDATE, DELETE.
• INSERT: Adds new data into a table

• UPDATE: Modifies existing data in a table

• DELETE: Removes data from a table
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Q2. Write commands for Joins
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• INNER JOIN: Returns rows when there is at least one match in both tables

• LEFT JOIN: Returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN: Returns all rows from the right table and the matched rows from the left table

• FULL JOIN: Returns rows when there is a match in one of the tables
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Q1. Ask questions regarding advance excel
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Q2. Ask questions from Power BI
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