Questions from Database Management

Q: What is the purpose of the temporal extensions to SQL that were

What is the purpose of the temporal extensions to SQL that were introduced in SQL:2011?

Q: What are the key new features of SQL introduced in SQL:

What are the key new features of SQL introduced in SQL:2016?

Q: Discuss the new commands that have been incorporated into SQL2007 and SQL2016

Discuss the new commands that have been incorporated into SQL2007 and SQL2016, and identify the commands they have replaced in previous versions of SQL.

Q: Research a NoSQL database such as MondoDB or Firebase. Why is

Research a NoSQL database such as MondoDB or Firebase. Why is it important to consider a metadata-based schema when working with NoSQL databases?

Q: Discuss the differences between an equi-join, natural join,

Discuss the differences between an equi-join, natural join, and outer join.

Q: When is it better to use a subquery instead of a join

When is it better to use a subquery instead of a join? Answer: Correlated subqueries use the result of the outer query to determine the processing of the inner query. Thus, the inner query varies fo...

Q: What are some of the purposes for which you would use correlated

What are some of the purposes for which you would use correlated subqueries?

Q: Explain the relationship between EXISTS and correlated subqueries.

Explain the relationship between EXISTS and correlated subqueries.

Q: Explain the following statement regarding SQL: Any query that can be

Explain the following statement regarding SQL: Any query that can be written using the subquery approach can also be written using the joining approach but not vice versa.

Q: Interview systems and database analysts at this organization. Ask them to

Interview systems and database analysts at this organization. Ask them to describe their systems development process. Which does it resemble more: the systems development life cycle or prototyping? Do...