Explain with examples what is meant by lossy decomposition and how this problem can be avoided in DBMS. Why are pointers necessary in any programming language? What will happen with following code: a. Will print the numbers from 1 to infinite, b. Nothing will happen, c. Will show an error...
Arrays, with reallocate lhs in effect, may use, allocate, or reallocate the entity on the lhs. whereas pointers, require the lhs to point to a valid object (else undefined behavior occurs), the lhs is treated as a reference into which the rhs is copied into. IOW the = on pointer(s...
Explain how arrays allow you to easily work with multiple values. Explain the relationship between the length and valid indexes of an array. Why do we need to pass a size as well as the array to any function/procedure where w...
https://rangle.io/blog/map-reducing-the-pain-of-dealing-with-arrays/ map: But it’s not really a way of dealing with arrays. It’s about mapping one value into a new value, and getting the same type back. So the takeaway is that you don’t have to care if map loops or not, o...
you index on a column that holds an array value, MongoDB creates separate index entries for every element of the array. These multikey indexes allow queries to select documents that contain arrays by matching on element or elements of the arrays. Here is a sample document within a collection...
} while(!s.isEmpty()) { q->enqueue(s,pop()); } } Stacks and Queues: Stacks and Queues are two of the most important data structures in programming: A Stack has two main operations: Push: Pushes an element into the stack ...