Which One of the Following Is True About B-Trees (Including

question 23

Multiple Choice

Which one of the following is true about B-trees (including B-tree variations) ?

• A) The B-tree structure is used by many DBMS
• B) The B-tree is rarely used because it is hard to implement
• C) The B-tree is a theoretical model not used at all
• D) The B-tree has been replaced in new relational DBMS by radically different data structures.

---

Definitions:

Expected Number

The calculated average or mean value of a numeric dataset, predicting the central value around which other values tend to cluster.

Customers In Service

The number of customers currently being served or assisted in a service-based business or setting.

Probability

The measure of the likelihood or chance that a particular event will occur, expressed as a number between 0 and 1.

System

A set of connected elements or components that function together as a complex whole, often described in terms of inputs, processes, outputs, and feedback.