Question
What is the difference between bullion and numismatic
coins? ÂSolution
The main difference between bullion and numismatic coins is the way they are valued. Bullion coins are primarily valued for their metal content, while numismatic coins are valued for their rarity and historical significance. Numismatic coins can be made of less valuable metals and still be worth more than their weight in gold or silver due to their collectible value.
In paging, the page size is defined by:
In a relational database, what is a candidate key?
Multiversion Concurrency Control (MVCC) ensures:
What does re.sub(r'(\w+)', r'_\1_', 'hello world') return?
Given the following Python-like code snippet:Â
  ```python
  class Counter:
    def __init__(self):
   ...
Which key uniquely identifies a record in a table?
Which operation is NOT part of relational algebra?
Which SQL isolation level allows phantom reads but prevents dirty reads and non-repeatable reads?
What will re.findall(r'\d+', 'abc123def45ghi') return?Â
Which normal form eliminates transitive dependency?
