Question
 Type I error occurs
whenSolution
The process of distinguishing between the null hypothesis and the alternative hypothesis is aided by considering two conceptual types of errors. The first type of error occurs when the null hypothesis is wrongly rejected. The second type of error occurs when the null hypothesis is wrongly not rejected. (The two types are known as type 1 and type 2 errors.)
A relation is in 2NF if:
Which of the following is a significant disadvantage of using a traditional file system compared to an RDBMS?
What does the ‘
What does re.sub(r'(\w+)', r'_\1_', 'hello world') return?
Which constraint ensures that no duplicate values exist in a column?
In relational algebra, the operation that combines tuples from two relations using common attribute values is:
Which of the following is a weak entity in a database?
Which of the following is NOT a type of database model?
Which of the following is true about ACID properties in DBMS?
Deadlock occurs when:
