Question
When was the Euro officially adopted as the common European
currency?Solution
The Euro was officially adopted as the common currency of the European Union for electronic transactions and accounting purposes in January 1999. However, the physical Euro banknotes and coins were only introduced into circulation later, in January 2002. This two-stage implementation allowed for a transition period for financial markets and systems to adapt to the new currency.
Which deadlock prevention scheme allows older transactions to preempt younger ones?
Which of the following SQL queries would return the total number of employees in each department, but only for departments with more than 10 employees?
Which of the following commands are used to put a restriction on the number of rows returned from a query?
In an E-R diagram, a double rectangle represents a:
Consider the following Java-like pseudo-code for inserting a node into a Binary Search Tree (BST):
  ```java
  class Node {
Which of the following is a non-relational database?
What does the ‘
HTTPS ensures which of the following?
A program needs to process elements from a `Queue` until it becomes empty. Which control flow structure is most suitable for this task?Â
In a relational database, what is a candidate key?
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