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I applied via Company Website and was interviewed in Oct 2019. There was 1 interview round.
Yes, there are various technologies used in barcode readers.
Laser scanners: Use a laser beam to read barcodes.
CCD scanners: Use an array of tiny light sensors to capture barcode data.
Camera-based scanners: Use image processing techniques to read barcodes.
Pen-type scanners: Require the user to swipe the scanner across the barcode.
Mobile barcode scanners: Utilize the camera of a mobile device to scan barcodes.
To make a number <4 and >3 using 3, 4, and a symbol/operator on the calculator.
Use the division operator (/) to divide 4 by 3, resulting in a number greater than 3 and less than 4.
Alternatively, use the subtraction operator (-) to subtract 3 from 4, resulting in a number greater than 3 and less than 4.
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I appeared for an interview before Apr 2022.
I applied via Campus Placement and was interviewed in Nov 2024. There were 3 interview rounds.
Two hours and 32 questions
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
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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