Final answer:
Normalization may indeed lead to the addition of entities and/or attributes in an Entity-Relationship (E-R) diagram, as it restructures the database to reduce redundancy and enhance data integrity. The given statement is true.
Step-by-step explanation:
True, normalization may result in additional entities and/or attributes being added to the Entity-Relationship (E-R) diagram. Normalization is a process used in database design to reduce data redundancy and improve data integrity. The process involves organizing data into tables in such a way that the results of using the database are always unambiguous and as intended. During normalization, data is divided into multiple related tables, and as a result, new entities may be identified that require representation in the E-R diagram.
For example, if you have a table that contains information about customers and their orders, through normalization, you might separate this into two tables: one for customers and one for orders. This separation may call for the creation of additional foreign key attributes, relationships, or even new entities if more granularity is needed, all of which would be reflected in an updated E-R diagram.