Are you preparing for a Data Engineer interview? Here are 15 real-life questions asked in interviews along with brief answers to help you revise key concepts. 🔹 Q1. Which Integration…
1. What is the difference between managed and external tables? Managed Tables: External Tables: 2. What is the use of the collect command? Out-of-Memory Exceptions: These occur when: 3. Explain…
1.Find the second high salary employee from Employee table consist of EmpID, Name,Salary Columns.Select TOP 1 * from(Select TOP 2 * from Emp.EmployeeOrder by Salary desc) as AOrder by Salary…
OLTP (Online Transaction Processing) Source:OLTP relies on real-time, transactional data from a single source. Characteristics:It manages a large number of small, individual transactions. Response Time:Response time is typically in milliseconds.…
1) SELECT – Select statements are used to fetch data from a database. Every query will begin with SELECT. SyntaxSELECT column_nameFROM table_name; 2) LIMIT – Limiting the number of rows…
SQL, which stands for Structured Query Language, is a tool used to manage and manipulate data in a database. MySQL, on the other hand, is a relational database management system…
Apurva Suke