# How Well Do You Know Your Data And Modelling?

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An abstract model that organizes elements of data and standardizes how they relate to one another and to properties of the real world entities. Take this quiz to tell us how well you know your data and modelling.

• 1.

### The term data model is used in two distinct but closely related senses. which of these two?

• A.

Geometry and formalization

• B.

Relationships and geometry

• C.

Abstract formalization and relationships.

• D.

None of the above

C. Abstract formalization and relationships.
Explanation
The term "data model" is used to refer to the abstract formalization and relationships within a database. It involves the process of organizing and structuring data in a way that allows for efficient storage, retrieval, and manipulation. This includes defining the entities, attributes, and relationships between them. The other options, such as geometry and formalization or relationships and geometry, do not accurately capture the essence of what a data model represents.

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• 2.

### Modelling may refer to which of the following?

• A.

Scientific model, a simplified and idealized understanding of physical systems

• B.

Physical model or plastic model, a physical representation in three dimensions of an object, such as a globe or model airplane

• C.

Conceptual model, a representation of a system using general rules and concepts

• D.

All of the above

D. All of the above
Explanation
The correct answer is "All of the above" because modelling can refer to all three types mentioned in the options. A scientific model is a simplified understanding of physical systems used to study and analyze them. A physical model is a three-dimensional representation of an object, often used for demonstration or testing purposes. A conceptual model is a representation of a system using general rules and concepts, typically used for understanding and communication purposes. Therefore, all three types fall under the umbrella of modelling.

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• 3.

### What is the main aim Data models?

• A.

The main aim of data models is analyze information by providing the definition and format of data.

• B.

The main aim of data models is to restructure information systems.

• C.

The main aim of data models is to support the development of information systems by providing the definition and format of data.

• D.

None of the above

C. The main aim of data models is to support the development of information systems by providing the definition and format of data.
Explanation
The main aim of data models is to support the development of information systems by providing the definition and format of data. Data models are used to organize and structure data in a way that can be easily understood and utilized by information systems. They provide a blueprint for how data should be stored, organized, and accessed within a system. By defining the structure and format of data, data models help ensure consistency, accuracy, and efficiency in information systems.

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• 4.

### According to ANSI, data models is allows the ______ perspectives.

• A.

Two

• B.

Four

• C.

Five

• D.

Three

D. Three
Explanation
According to ANSI, data models allow for three perspectives.

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• 5.

### One of the earliest pioneering works in modelling information system was done by who?

• A.

Charles Darwin

• B.

Young and Kent

• C.

Boyles and Kent

• D.

Elon Musk

B. Young and Kent
Explanation
Young and Kent were one of the earliest pioneers in modelling information systems. They conducted groundbreaking work in this field, which laid the foundation for future developments. Charles Darwin is not relevant to this topic as he is known for his work in the field of biology. Boyles and Kent are not associated with pioneering work in modelling information systems. Elon Musk, while a prominent figure in technology and innovation, is not connected to the early development of information system modelling.

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• 6.

• A.

1958

• B.

1999

• C.

1934

• D.

1993

A. 1958
• 7.

### How many type of Data models are there?

• A.

6 models

• B.

7 models

• C.

8 models

• D.

9 models

A. 6 models
Explanation
There are six types of data models.

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• 8.

### Which of this is not a common model in Database model?

• A.

Star schema

• B.

Polar model

• C.

Network model

• D.

Relational model

B. Polar model
Explanation
The polar model is not a common model in database modeling. The star schema, network model, and relational model are all widely used in database design and management. However, the polar model is not commonly used in database systems.

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• 9.

### Which of the following  is a specification describing how a database is structured and used?

• A.

Data structure diagram

• B.

Semantic data model

• C.

Generic model model

• D.

Database model

D. Database model
Explanation
A database model is a specification that describes how a database is structured and used. It defines the logical and physical structure of the database, including the tables, relationships, constraints, and rules for data manipulation. It serves as a blueprint for designing and implementing a database system, providing a framework for organizing and storing data efficiently. A database model helps ensure data integrity, consistency, and security, and allows for efficient data retrieval and manipulation. It is an essential component of database management systems and is used by database administrators and developers to design and maintain databases.

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• 10.

### Which of the following  is the design of data for use in defining the target state and the subsequent planning needed to hit the target state?

• A.

Data architecture

• B.

Data structure

• C.

Data modelling

• D.

Pattern