Which of the Following Statements Concerning Entity-Relationship Modeling Is True

question 10

Multiple Choice

Which of the following statements concerning entity-relationship modeling is true?

• A) It has a strong theoretical base but seldom is used in practice.
• B) It is a method for arranging data elements after the decision has been made to implement a relational database management system.
• C) It involves identifying and documenting the system outputs and the contents of the outputs that are required by users.
• D) The entity-relationship diagram depicting the model is read from top to bottom and cannot be read from bottom to top.

---

Definitions:

Three-Dimensional Array

An array that includes three levels of indices and can be visualized as an array of arrays of arrays.

Second Subscript

In multidimensional arrays, the second subscript refers to the index within the second dimension of the array.

Rank

Rank often refers to the position or level of something or someone in a particular order or hierarchy.

Mathematical N-Tuples

An ordered list of n elements, where n can be any non-negative integer, used in mathematics to represent fixed-length sequences.