Question

Data Models: A collection of tools for describing
Data relationships
Tools to modify data
Data constraints
User Interface to modify data

Answer 1

Data Relationship is the right answer.

Answer 2

Data relationships and Data constraints

According to Data Base Management System (DBMS), a data model refers to a collection of tools for describing :

• Data relationships
• Data constrains
• and also for describing data semantics
• A data model will define the data elements and relationship between the data elements.

• Some of the data models include Hierarchical model, Network model, Relational model, Flat-data model and others.
• Out of all the data models available, Relational data model is the most widely used model.