Question 687 __ is an intermediate storage area used for data processing during the extract transformation and load process of data warehousing A Inter storage area […]

Question 688 In a relational database model, cardinality of a relation means A The number of constraints B The number of tuples C The number of […]

Question 689 With SQL, how can you return the number of records in the “person’s” table? A SELECT COUNT (*) FROM persons B SELECT COUNT () […]

Question 690 In relational databases, the natural join of two tables is A cartesian product always B combination of union and filtered cartesian product C combination […]