Q. In the temporal SQL query "SELECT ID, Location, Value FROM Sensor WHERE Start >= 20 and End <= 27," what is the expected result with respect to abstract temporal databases?

View solution

Q. What does the SQL query "SELECT ID, Value, Start, End FROM Sensor WHERE Start <= 23 and End >= 27" retrieve?

View solution

Q. In the context of stream-based query answering, what is the key idea?

View solution

Q. What is the purpose of sliding time windows in stream-based query answering?

View solution

Q. What are temporal aggregation operators used for in stream-based query languages?

View solution

Q. What are some extensions to the RDF query language SPARQL that have been proposed for stream-based access scenarios?

View solution

Q. In the context of stream-based query answering, what does C-SPARQL rely on for dealing with entailments for RDFS or OWL 2 RL?

View solution

Q. What is SNEEQL?

View solution

Q. What is EP-SPARQL tailored for?

View solution

Q. What is CQELS known for in the context of stream-based query implementations?

View solution

Q. How does T-SPARQL apply techniques from temporal databases to RDF querying?

View solution

Q. What combination of querying approaches is considered useful in applications?

View solution

Q. What was a design goal in early work on deductive event recognition?

View solution

Q. Why are brute-force approaches for query answering with respect to ontologies not suitable for large real-world ontologies?

View solution

Q. What is one promising idea for scalable stream-based answering of continuous queries?

View solution

Q. What was the traditional assumption made by OBDA approaches regarding query execution?

View solution

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

View solution

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