Persistent Systems Lead Engineer Interview Questions, Process, and Tips

TSQL is a Microsoft proprietary extension of SQL used for querying and managing relational databases.

• TSQL stands for Transact-SQL and is used in Microsoft SQL Server.

• Optimization techniques in TSQL include indexing, query tuning, and avoiding unnecessary joins.

• Examples of optimization techniques in TSQL include using appropriate indexes on frequently queried columns and avoiding using functions in WHERE clauses.

Agile process involves iterative development, collaboration, and flexibility in responding to change.

• Agile process breaks down projects into smaller, manageable tasks called sprints.

• Teams work in short iterations, typically 2-4 weeks, to deliver working software.

• Regular meetings like daily stand-ups, sprint planning, and retrospectives help keep the team on track.

• Customer feedback is incorporated throughout the develop...read more

Customization tools and details are essential for tailoring engineering solutions to specific needs.

• Customization tools allow for adjusting parameters to meet unique requirements

• Details provide a deeper understanding of the system being engineered

• Examples include CAD software for designing custom parts and simulation tools for optimizing performance

A basic trigger code is used to automatically perform an action when a certain event occurs in a database.

• Triggers are written in SQL and can be used to enforce business rules, perform data validation, or maintain data integrity.

• Example: CREATE TRIGGER trigger_name BEFORE INSERT ON table_name FOR EACH ROW BEGIN ... END;

Check if a string is a palindrome in Python

• Use string slicing to reverse the string and compare with the original string

• Remove spaces and convert to lowercase for accurate comparison

• Use a for loop to iterate through the string and check if it is a palindrome