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Protex Computer SQL Developer Interview Questions and Answers
Protex Computer SQL Developer Interview Experiences
1 interview found
Anonymous
Interview Questionnaire
4 Questions
- Q1. All Basic DBMS and RDBMS Concepts
- Q2. What is Aggregate Function?
- Ans.
Aggregate functions perform calculations on a set of values and return a single value.
Used with SELECT statement to return a single value calculated from multiple rows
Examples include SUM, AVG, COUNT, MAX, MIN
Can be used with GROUP BY clause to group results by a specific column
- Q3. Different types of Join?
- Ans.
Different types of Join in SQL
Inner Join - returns only matching rows from both tables
Left Join - returns all rows from left table and matching rows from right table
Right Join - returns all rows from right table and matching rows from left table
Full Outer Join - returns all rows from both tables
Cross Join - returns Cartesian product of both tables
- Q4. Difference between delete vs drop vs truncate?
- Ans.
Difference between delete vs drop vs truncate
DELETE is used to remove specific rows from a table
DROP is used to remove an entire table from the database
TRUNCATE is used to remove all rows from a table
DELETE can be rolled back, DROP and TRUNCATE cannot be rolled back
DELETE is slower than TRUNCATE and DROP
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
(2 Questions)
- Q1. Explain sql commands
- Q2. Explain normalization in sql
Selected
I applied via Company Website and was interviewed in Nov 2024. There were 2 interview rounds.
Sql
ddl
dml
tcl
dql
joins
view
date commit
Date commit
joins
view
sum
max
avg
count
min
(1 Question)
- Q1. What is sql , index , stored proc , triggers
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(2 Questions)
- Q1. Joins in sql server
- Q2. Set operator in sql
Interview Preparation Tips
(2 Questions)
- Q1. Explain about SSIS Architecture
- Ans.
SSIS Architecture is a platform for data integration and workflow applications.
SSIS stands for SQL Server Integration Services
It includes a data flow engine, control flow engine, and event handling
SSIS packages can be created using SQL Server Data Tools (SSDT)
SSIS packages can be scheduled and executed using SQL Server Agent
- Q2. How to implement transactions in ssis
- Ans.
Transactions in SSIS can be implemented using the TransactionOption property in Control Flow tasks.
Set the TransactionOption property to Required on the Control Flow tasks that need to be included in the transaction.
Use the TransactionOption property to specify the level of transaction support needed for each task.
Transactions can be managed using the Distributed Transaction Coordinator (DTC) service.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. How to insert multiple values in one go
- Ans.
Use the INSERT INTO statement with multiple value sets separated by commas
Use the INSERT INTO statement followed by the table name
List the column names in parentheses after the table name
Use the VALUES keyword followed by multiple value sets in parentheses, separated by commas
Example: INSERT INTO table_name (column1, column2) VALUES (value1, value2), (value3, value4)
- Q2. Update query using joins
- Ans.
Update query using joins in SQL
Use UPDATE statement with JOIN clause to update data in multiple tables
Specify the tables to be updated and joined using ON clause
Set the columns to be updated in SET clause
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Naukri.com and was interviewed in Apr 2024. There were 3 interview rounds.
(1 Question)
- Q1. Technical discussion
(1 Question)
- Q1. Manager round and technical discussion
(1 Question)
- Q1. Selection processs
(2 Questions)
- Q1. Write a query to display the highest salary
- Ans.
Query to display the highest salary in a table
Use the SELECT statement to retrieve data
Use the MAX() function to find the highest salary
Specify the column name for salary in the query
- Q2. Stored proceduers,functions,cursors triggers,
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Types of Indexes
- Ans.
Types of indexes include clustered, non-clustered, unique, composite, and filtered indexes.
Clustered indexes physically reorder the data in the table based on the index key.
Non-clustered indexes create a separate structure for the index, pointing back to the original table data.
Unique indexes ensure that no two rows have the same values in the indexed columns.
Composite indexes are created on multiple columns to improve...
- Q2. Sceanrio based question
(2 Questions)
- Q1. Salary discussion
- Q2. Joining date and last working date
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