Q. Which layer in the proposed query answering stack focuses on distributing queries to individual servers?

View solution

Q. What is the key to gaining a real impact on efficiency in OBDA systems?

View solution

Q. What is one of the key challenges in traditional database query languages like SQL?

View solution

Q. Which approach in database systems employs recognition and direct manipulation objects to provide easy and intuitive user interaction?

View solution

Q. What is the primary concern of usability in software systems, including database systems?

View solution

Q. What is a key factor for the success of a system from a usability perspective?

View solution

Q. What paradigm is considered crucial for capturing and communicating domain knowledge to end-users in database systems?

View solution

Q. What is a key feature of any Ontology-Based Data Access (OBDA) system regarding the ontology?

View solution

Q. Why is it unrealistic to expect all domain experts to formulate queries directly in a complex query language?

View solution

Q. What is faceted search in the context of ontology-based systems?

View solution

Q. How does faceted search benefit users in information retrieval?

View solution

Q. When does faceted search encounter limitations in information retrieval?

View solution

Q. What is a limitation of using ontology development tools like Protégé for query formulation?

View solution

Q. What is the purpose of a "query by navigation" interface in ontology-based systems?

View solution

Q. What is the significance of extending faceted search in ontology-based systems?

View solution

Q. How does the navigational approach in query by navigation differ from traditional keyword-based approaches?

View solution

Q. What is a potential application of query by navigation in the Semantic Web domain?

View solution

Q. What is a key challenge of diagrammatic approaches and textual data browsers in the context of complex ontologies?

View solution

Q. Why is it challenging for end-users, even those knowledgeable in their domain, to access data in some cases?

View solution

Q. What is a necessary feature of a query formulation tool to help users understand complex ontologies?

View solution