Question
Six people - A, B, C, D, E and F are sitting in a
straight line facing north. Who sits to the immediate left of D? (I) A sits second from one of the extreme ends of the line. Only two people sit between A and B. E sits to the immediate right of C. (II) C sits third from the left end of the line. Only one person sits between C and F. E sits third to the right of F. Given below is a question followed by two statements I and II. Read both statements carefully to decide which one of them is sufficient to answer the question.Solution
There is no information of D, so we cannot keep D anywhere.
Which SQL constraint ensures that a column cannot have NULL values?
A view in SQL is:
Which SQL command is used to retrieve data from a table?
Which of the following is a common technique for concurrency control in databases?
Which of the following matches the definition given below: It is an artificial key that aims to uniquely identify each record.
Which SQL statement is used to remove all rows from a table without logging individual row deletions?
When implementing a `Graph` traversal algorithm like Depth-First Search (DFS) recursively, what is the primary control flow mechanism that manages the o...
Which of the following is a significant disadvantage of using a traditional file system compared to an RDBMS?
Distributed transactions typically use which protocol for atomicity?
Which of the following is a DML command?
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