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Databases Interview Questions

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Databases Interview Questions

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Database questions, such as two database and how do you join them, how to select and combine.

If you had to pick one television character who is most like you, who would it be?

How is a RDBMS different from a regular database?

Questions about database queries and depth of knowledge and technologies in JAVA. They wanted experience with Spring and Hibernate and agile.

1. What difference have you made in current team apart from regular work ? 2. What are the steps you follow to rebuild a table in database ? 3. How did you do performance tuning ? 4. How do you find the skewness of data in table ? 5. Difference between RDBMS and Dimensional Modeling SQL 1) purchase customer_id product_id quantity purchase_date 1 111 1 01/01/2017 1 111 2 01/02/2107 1 222 2 01/02/2017 2 111 3 01/04/2017 2 222 1 01/03/2017 3 222 1 01/05/2017 3 222 1 01/06/2017 3 111 1 01/06/2017 3 111 1 01/04/2017 Q: How many customers bought each product how many times during the week? Product_Id Number_of Customers Number_of_Times 111 2 2 111 1 1 222 2 1 222 1 2 2) daily_usage account_id usage_amount usage_date 1 10 1 1 20 2 1 15 3 1 30 4 Q. a) How do you print the usage_amount of previous/consecutive rows b) Without using window functions

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Design DB Tables for Course-Student-Marks

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