Database Implementation and Testing Quiz

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What is the main objective of database design in DBMS?

To improve data consistency

To focus on hardware resources only

To produce logical and physical design models of the proposed database system (correct)

To reduce disk storage space

Why are properly designed databases considered cost-effective in terms of disk storage space?

They compress the data to reduce the storage space

They require high disk space due to complex designs

They eliminate the need for using any disk storage

They are efficient in organizing and storing data (correct)

How does database design help in improving data consistency?

By focusing on hardware resources

By ignoring user requirements

By randomly storing data elements

By facilitating proper correlation of data elements (correct)

Which aspect does the logical data model mainly concentrate on?

Data requirements and the data to be stored Signup and view all the answers

What does the physical data design model involve?

Translating logical DB design into physical media Signup and view all the answers

What is a column in a database?

The smallest storage element depicting related records of a table Signup and view all the answers

Which database element gives access to just a single owner for exclusive modification?

Database schema Signup and view all the answers

Which process does database design NOT concern itself with?

Physical storage considerations Signup and view all the answers

What does the internal model focus on in a database?

Physical storage Signup and view all the answers

Which model in a database helps understand structures like views, indexes, and constraints?

Conceptual Model Signup and view all the answers

What does a database schema represent?

Groups of related objects Signup and view all the answers

What is the unique feature of an external model in databases?

Application interface association Signup and view all the answers

What is the main purpose of data conversion and loading stage in relational databases design?

Importing and converting data from the old system into the new database Signup and view all the answers

Which database design technique helps in reducing data redundancy and eliminating anomalies like Insertion, Update, and Deletion Anomalies?

Normalization Signup and view all the answers

What is the primary purpose of Normalization in SQL?

To eliminate redundant (repetitive) data Signup and view all the answers

What is ER Modeling used for in database design?

Representing real-world objects Signup and view all the answers

Which of the following is NOT considered a database element?

Testing Signup and view all the answers

What is the primary function of a database table?

Storing and organizing data Signup and view all the answers

What is the main focus of the planning stage in the database development life cycle?

Considering the Information Systems strategy Signup and view all the answers

Which stage of the database design process involves developing a database model on paper without any physical implementations?

Logical model Signup and view all the answers

Why do small database systems usually have a simpler database design process?

They involve fewer steps in the development life cycle Signup and view all the answers

In a database system, what is the purpose of the physical model stage?

Implementing the logical model considering DBMS factors Signup and view all the answers

Which component of the database development life cycle defines the scope and boundaries of the proposed database system?

System definition Signup and view all the answers

What is the primary difference between the logical model and physical model stages in database design?

Logical model is concerned with paper-based design, physical model with implementations Signup and view all the answers

What is an essential requirement of most databases according to the text?

Developing a security schema to determine data access Signup and view all the answers

Why are business rules important for a database developer?

To support all business rules and operations Signup and view all the answers

What is the purpose of enforcing some business rules directly in the database?

To ensure data integrity Signup and view all the answers