कर अपवंचन – 

Consider the following C++-like pseudo-code for a binary tree traversal:

    ```cpp

    struct Node {

        int data;

Query optimization heuristics often include:

In a relational database, what is a foreign key?

Which of the following is used to enforce referential integrity?

Which normal form eliminates transitive dependencies?

Which SQL clause is used to filter rows based on a specified condition *after* grouping has been performed?

The "Dirty Read" problem occurs when:

Which of the following is not part of the process control block (PCB)?

Multiversion Concurrency Control (MVCC) ensures:

The 'thrashing' in an operating system is related to: