Question
Which type of trigger fires once for each row affected
by the triggering DML statement?Solution
Row-level trigger
The command to test reachability of a host in Linux is:
Given a binary tree, a "zigzag" level order traversal prints the nodes level by level, but alternating the order of nodes from left-to-right and right-t...
A column or set of columns that uniquely identifies each row in a table is called a:
Which join should be used when you want to list all customers and any orders they may have placed, including customers who haven’t placed any orders?
Which type of join returns only matching records from both tables?
Which SQL constraint ensures that a column cannot have NULL values?
HTTPS ensures which of the following?
Which type of DBMS model organizes data in tables with rows and columns?
Given a `Queue` data structure with `enqueue` and `dequeue` operations. What is the element returned by the last `dequeue` operation in the following se...
The 'thrashing' in an operating system is related to:
