Which two signs should be interchanged to make the given

In paging, the page size is defined by:

A transaction that reads a value then later sees a different value because another transaction updated and committed in between experiences which anomaly?

Which SQL constraint ensures that a column cannot have NULL values?

What is the maximum number of processes that can be in the Ready state?

Shadow Paging avoids:

Which of the following is used to enforce referential integrity?

Which type of DBMS model organizes data in tables with rows and columns?

Which of the following schedules is serializable?

Which SQL isolation level allows phantom reads but prevents dirty reads and non-repeatable reads?

Which of the following is a transaction property ensuring all steps are completed or none?