Context: Static analysis techniques for software verification can be applied also in the scenario of query languages. In particular, the *Abstract interpretation framework has been extended to the field of query languages for relational databases as a way to support sound approximation techniques. The semantics of query languages can be tuned according to suitable abstractions of the concrete domain of data. The abstraction of relational database system has many interesting applications, in particular, for security purposes, such as fine grained access control, watermarking, etc.

Question: How can static analysis be useful with query languages?
Answer: software verification

Question: What do query languages support in abstract interpretation frameworks?
Answer: sound approximation techniques

Question: What is a security measure that uses a relational database system?
Answer: watermarking

Question: Can query languages be adjusted?
Answer: according to suitable abstractions of the concrete domain of data

Question: Why is static analysis impossible with query languages?
Answer: Unanswerable

Question: What do query languages oppose in abstract interpretation frameworks?
Answer: Unanswerable

Question: What is a security measure that no longer uses a relational database system?
Answer: Unanswerable

Question: What has very few interesting applications?
Answer: Unanswerable

Question: What techniques are now forbidden for software verification?
Answer: Unanswerable