Question
Who is the mother of D, in the given
arrangement? These questions are based on the following information. There are eight family members B, D, H, K, N, P, Q and R. N is uncle of Q, who is daughter of R. There are two married couples in the family and two grandchildren in the family. H has one daughter and one son. B is granddaughter of P and sister of D. P is sister-in-law of N. H is a male. Q has only one brother.Solution
MVCC (Multi-Version Concurrency Control) ensures:
Consider the following Java-like pseudo-code for inserting a node into a Binary Search Tree (BST):
  ```java
  class Node {
Given the following Python-like code snippet:Â
  ```python
  class Counter:
    def __init__(self):
   ...
Which SQL constraint ensures that a column cannot have NULL values?
What will be the output of the following Python code:
a=[1,2,3,4,5,6]
print(a[-1],a[-1:],a[:-1])
 What is the primary purpose of a "Trigger" in a database?
A `FOREIGN KEY` constraint is used to:
What does the ‘
Which of the following is a non-relational database?
Bitmap indexes are most efficient when: