Which of the following terms is described in statement below?

Which of the following terms is described in statement below? “It is a collection of conceptual tools
for describing data, data relationship, data semantics, and consistency constraints.”

A.
Data model

B.
Generic Data Model

C.
Relational model

D.
Entity-Relationship Model

Explanation:
A data model is a collection of conceptual tools for describing data, data relationship, data
semantics, and consistency constraints. In software
engineering, it is the process of creating a data model by applying formal data model descriptions
using data modeling techniques.
Answer D is incorrect. The Entity-Relationship Model is a collection of objects called entities and the
relationships between these
objects. Entities in a database are known as attributes. A relationship is an association among
several entities. It is a conceptual
representation of structured data. Entity-relationship modeling is a relational schema database
modeling method that is used in software

engineering to produce a type of conceptual data model of a system, often a relational database.
The logical structure of a database can be
expressed graphically by an E-R diagram, which has the following components:
Rectangle: It represents entity sets.
Ellipse: It represents attributes.
Diamond: It represents relationships among entity sets.
Line: It links attributes to entity sets.
Answer C is incorrect. A relational model uses a collection of tables to represent both data and the
relationship between those data.
Every table has multiple columns, and each column has a unique name. A relational model is an
example of a record-based model. Recordbased models are so named because the database is structured in a fixed format. Each table in the
database contains records of a particular
type and each record type defines a fixed number of fields or attributes. This model is the most
widely used data model, and most database
systems are based on this model. This model is at a lower level of abstraction than the E-R Model.
Answer B is incorrect. Generic data models are generalizations of conventional data models. They
define standardized general relation
types, together with the kinds of things that may be related by such a relation type. The Generic
Data Model is a pattern where all the
attributes are separated from the object and saved in a different table.