HCLTech Team Leader (Technical) Interview Questions and Answers

Q1. Dont Join this company its messed up
Add your answer

Q1. Dont join this company
Add your answer

Q1. Disadvantages of high degree of normalization
Ans. 
High degree of normalization can lead to increased complexity, decreased performance, and difficulty in querying data.
• Increased complexity in joins and queries

• Decreased performance due to multiple joins

• Difficulty in querying data across multiple tables

• Increased storage space required for normalized tables

• Potential for data redundancy if not properly managed
Answered by AI
Add your answer
Q2. Difference between table scan and Index scan
Ans. 
Table scan reads all rows in a table, while Index scan reads only specific rows using an index.
• Table scan is slower as it reads all rows sequentially.

• Index scan is faster as it reads only specific rows based on the index key.

• Table scan is used when a large portion of the table needs to be accessed.

• Index scan is used when only a small subset of rows need to be retrieved.

• Example: Table scan for SELECT * FROM table_name; ...read more
Answered by AI
Add your answer
Q3. Some complex queries using correlation and outer joins.
Add your answer

Hackathon kind of technical test

Q1. C and Autosar, Bit operations on C and Architecture view of Autosar layers
Add your answer