Choose the correct active/passive voice, which best

Multiversion Concurrency Control (MVCC) ensures:

The "Dirty Read" problem occurs when:

Which of the following is true about the primary key in a relational database?

What is a page fault?

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

In PL/SQL, a `CURSOR` is used to:

Which normal form removes transitive dependency?

ACID properties in DBMS ensure:

Which of the following concurrency control methods avoids deadlocks entirely but can reduce concurrency by blocking transactions at start?

Which of the following database models represents data as a collection of tables, where each table consists of rows and columns?