Answer:
c. This would reduce the number of tuples to involve in the join resulting in a more efficient query.
Explanation:
SQL or structured query language is a database querying language used to communicate or interact with databases. A database query could be as simple as returning all the columns from a database table to complex like joining several query results which in turn forms an algebra expression.
Every query statement or expression is executed with time, execution time needs to be minimized for efficiency, so, a well-arranged and reduced joining in the query improves the efficiency of the query.
Answer
input
Explanation:
modern ones are now input
Answer:
Bcc
Explanation:
Every recipient email address you enter into the “to” and “cc” fields will be able to see each other. The email addresses you add to the “bcc” field will not be visible to the “to” and “cc” recipients or the other “bcc” recipients.
Answer:
The only difference is the order of operations between the increment of the variable and the value the operator returns. So basically ++i returns the value after it is incremented, while i++ return the value before it is incremented.
