The relational model feature is that there are tables with many dimensions is much more data independence than some other database models. is no need for primary key data. are explicit relationships among records.

The relational model of database design is a widely used method of structuring data. Here are the features mentioned in your statement:

1. Tables with many dimensions: In the relational model, data is organized into tables (also known as relations) which can have multiple dimensions, i.e., columns. Each column represents a different attribute of the object being modeled.

2. Data independence: The relational model provides a high degree of data independence because it separates the physical storage of data from the logical representation of data. This means that changes to the physical storage of data do not affect the ability to access or manipulate the data logically.

3. No need for primary key data: This statement is not entirely accurate. In the relational model, a primary key is often used to uniquely identify each record in a table. However, it's not mandatory for every table to have a primary key.

4. Explicit relationships among records: The relational model allows for relationships between tables to be explicitly defined. These relationships can be one-to-one, one-to-many, or many-to-many. The relationships are established through the use of foreign keys, which are fields in a table that link to the primary key of another table.