Question

Why is the assumption of centralized query execution not usually applicable in the real world for OBDA?

a.

Because centralized systems are more efficient

b.

Because data are distributed over many autonomous, heterogeneous sources

c.

Because centralized systems can handle TBs of data

d.

Because centralized systems can generate complex queries

Posted under Big Data Computing

Answer: (b).Because data are distributed over many autonomous, heterogeneous sources Explanation:In the real world, data for OBDA are often distributed over many autonomous, heterogeneous sources, making the assumption of centralized query execution impractical.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Why is the assumption of centralized query execution not usually applicable in the real world for OBDA?

Add Comment

Similar Questions

Discover Related MCQs

Q. What is FedX in context of query execution ?

View solution

Q. What is one of the important advantages of cloud computing, especially IaaS, PaaS, and SaaS clouds?

View solution

Q. Which computing paradigm is the most popular for Big Data processing?

View solution

Q. What is the main advantage of elastic query execution?

View solution

Q. What is the Athena Distributed Processing (ADP) system?

View solution

Q. What kind of queries are expressed in the data flow language used by ADP?

View solution

Q. What is one of the key features of ADP?

View solution

Q. What is the role of ARM in the ADP system?

View solution

Q. What is the purpose of containers in the ADP system?

View solution

Q. Which services have been developed on top of ADP that are useful for the OBDA paradigm?

View solution

Q. How will ADP be extended to maximize its impact on the OBDA Big Data paradigm?

View solution

Q. What is a major bottleneck in data-intensive industries when it comes to giving end-users flexible access to large corporate data stores?

View solution

Q. How can OBDA (Ontology-Based Data Access) help overcome the bottleneck in providing flexible access to large corporate data stores?

View solution

Q. What is the FP7 Integrating Project Optique focused on?

View solution

Q. What is the key benefit of using OBDA in providing flexible access to corporate data stores?

View solution

View All MCQs on Big Data Computing

Suggested Topics

Are you eager to expand your knowledge beyond Big Data Computing? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

HTML

Start your journey in web development with our HTML MCQs. Learn the building blocks...

Digital Communication

Master the basics of electronic communication with our Digital Communication MCQs....

C Programming

Master one of the most widely used programming languages with our C Programming MCQs....

Visual Basic

Enhance your knowledge of Microsoft's event-driven programming language with our...

Data Structures and Algorithms

Journey through the fundamentals of Data Structures and Algorithms with our extensive...

Object Oriented Programming Using C++

Enhance your programming skills with our MCQs on Object Oriented Programming using...

Systems Analysis and Design Methods

Get familiar with the process of designing and improving business systems with our...

DBMS

Get a firm grasp on database systems with our DBMS MCQs. Explore relational...

Systems Programming

Decode low-level programming with our Systems Programming MCQs. These questions delve...