In planning a database and it's related tables it is important to consider

The relational database model is based on the link between the attributes of a certain data type. This relation is important to be considered so the attributes A1 to An. are properly assigned to a  data type (Type1, Type2etc.)

Explanation:

In a relational database model is important to consider what are the tables in which the data is contained and how are them related to each other allowing to access the information easily.

answer; institution based;

answer; (c) communism and socialism;