Final answer:
An entity-relationship model (ERM) or a database normalization process is used to allow students to have multiple addresses in a database. A one-to-many relationship between students and addresses allows each student to be linked to several addresses while facilitating management of various custody arrangements and other scenarios.
Step-by-step explanation:
The technique used to model a situation where a student may have multiple addresses is known as an entity-relationship model (ERM) or a database normalization process. When designing a database to handle such scenarios, one common solution is to create separate tables for students and addresses and establish a relationship between them, often a one-to-many relationship. This means that one student can be associated with multiple addresses, but each address is linked to only one student.
In practice, you would create a students table with a unique identifier for each student, and an addresses table where each address also has a unique identifier and a foreign key column that references the student's identifier. This allows for the management of different custody arrangements or any situation where one entity (in this case, a student) is associated with several other entities (their addresses). This approach benefits from allowing a student to have any number of addresses, adding flexibility and precision to the representation of a student's contact information within the database. It's an application of the principle stated in the guideline 1.4 where students can use representations and models to analyze situations or solve problems qualitatively and quantitatively.