MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Conceptual Data Model: This Data Model defines WHAT the system contains. This model is typically created by Business stakeholders and Data Architects. The purpose is to organize, scope and define business concepts and rules.

Detailed explanation-2: -Hierarchical, Relational, and Network are data models.

Detailed explanation-3: -There are three different types of data models – conceptual, logical and physical. Each data model has a specific purpose, which is primarily defined by the level of operational detail. Conceptual data models are built at the first stage of the data modeling process.

Detailed explanation-4: -Conceptual data model, describes the database at a very high level and is useful to understand the needs or requirements of the database. It is this model, that is used in the requirement gathering process i.e., before the Database Designers start making a particular database.