Find the sum of the first 25 even natural numbers.

Which normal form eliminates transitive dependency?

In two-phase locking, a transaction releases its locks:

In a relational schema, which normal form eliminates transitive dependencies (i.e., non-prime attribute depends on another non-prime attribute)?

Which of the following is a key difference between a file system and a Relational Database Management System (RDBMS)?

What will be the value of `x` after the following pseudo-code execution? 

```

    x = 0

    data = [10, 20, 30]

Query optimization heuristic that “pushes selections down” improves:

In the Relational Database Model, data is organized into:

Which operation is NOT part of relational algebra?

Which normal form ensures that every determinant is a candidate key?

In the context of debugging an Object-Oriented program, what does "stepping over" a method call typically do in a debugger?