IIM Indore Introduction to Databases Quiz
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Questions and Answers

What are the main challenges of File System in comparison to DBMS?

Data redundancy, data inconsistency, data isolation, data integrity, concurrent access anomalies.

Why is data considered a shared resource in database systems?

Data needs to be shared among different users and applications within an organization.

What is the importance of data hierarchy in database design?

Data hierarchy helps in organizing data from general to specific levels, facilitating efficient data management and retrieval.

What is the concept of normalization in database design?

<p>Normalization is the process of organizing data in a database to reduce redundancy and dependency.</p> Signup and view all the answers

What are the costs and risks associated with converting from traditional file processing systems to databases?

<p>Significant costs, especially for large companies, and potential risks include data migration challenges and system downtime.</p> Signup and view all the answers

Why do organizations justify using databases instead of traditional file processing systems?

<p>To meet changing application needs, reduce lead times, lower development costs, share data elements, improve data quality, and control access to data.</p> Signup and view all the answers

What is the main advantage of using a relational database over separate systems and programs?

<p>Reduces duplication and increases integrity</p> Signup and view all the answers

What does a system catalog (metadata) provide in a database?

<p>Description of independent data to enable program-data</p> Signup and view all the answers

What comprises logically related data in a database?

<p>Entities, attributes, and relationships of an organization's information</p> Signup and view all the answers

What does a database management system (DBMS) enable users to do?

<p>Define, create, and maintain the database</p> Signup and view all the answers

What are some components of controlled access to a database?

<p>Security system, integrity system, concurrency control system, recovery control system, user-accessible catalog, view mechanism</p> Signup and view all the answers

Why is data hierarchy important in database design?

<p>To organize data in a structured manner</p> Signup and view all the answers

What is the main focus of File System design compared to Database Design?

<p>File System design focuses on process/transformations, while Database Design focuses on data and their relationships.</p> Signup and view all the answers

What are the tools used in requirement analysis for File System design and Database Design, respectively?

<p>For File System design: Data Flow Diagrams (DFDs). For Database Design: User view analysis, data definition and description, and Normalization.</p> Signup and view all the answers

How is the traditional approach different from the modern approach in the context of File System vs DBMS?

<p>The traditional approach is basically used in transactions file system environment, while the modern approach is used in the database environment.</p> Signup and view all the answers

Explain the cost implications of File System design compared to Database Design.

<p>File System design is costly, time-consuming, and complex, while Database Design is less costly, less time-consuming, and simple.</p> Signup and view all the answers

What is the key difference in maintenance requirements between File System and DBMS?

<p>For File System, the design needs to be modified when the process changes, while for DBMS, there is no need to modify the design when the process changes.</p> Signup and view all the answers

How are programmers involved in File System compared to DBMS?

<p>In File System, programmers are required, while in DBMS, users can write their programs using 4GLs with little help from system people.</p> Signup and view all the answers

Describe the centralized vs decentralized nature of File System and DBMS design.

<p>File System design is more or less centralized, while DBMS design is more or less decentralized.</p> Signup and view all the answers

What is the emphasis on in File System design versus DBMS design?

<p>File System design places emphasis on 'how', while DBMS design places emphasis on 'what'.</p> Signup and view all the answers

Explain the advantages of the Database approach over the traditional File System approach.

<p>The Database approach offers reduced problems, advantages of the database approach, program-data independence, planned data redundancy, improved data consistency, improved data sharing, increased application development productivity, and more.</p> Signup and view all the answers

What are some of the risks associated with adopting a DBMS?

<p>Some risks include the need for new specialized personnel, installation and management cost and complexity, conversion costs, need for explicit backup and recovery, organizational conflict, centralized control, and currency issues.</p> Signup and view all the answers

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