Bissoy.com
Doctors Medicines MCQs Q&A

In SQL, the NOT NULL constraint can be written as a table level constraint.

In SQL, the NOT NULL constraint can be written as a table level constraint. Correct Answer False

In SQL, the NOT NULL constraint can not be written as a table level constraint. It is always written as a column level constraint because it is not necessary to fill each information. If all the data needs to be not null, then we can place the constraint after each column name.

Related Questions

Assuming Z and Y are the two control variables, the following are the constraints laid out for maximizing the profit: Maximize profit (P) = 8X – 5Y Subject to Constraint-1: 2X + Y ≤ 1000 Constraint-2: 3X + 4Y ≤ 2400 Constraint-3: X + Y ≤ 800 Constraint-4: X – Y ≤ 350 Constraint-5: X ≥ 0 Constraint-6: Y ≥ 0 Which of the above constraints is a redundant one and does not have any effect on the solution?
Consider two relations R1(A, B) with the tuples (1, 5), (3, 7) and R2(A, C) = (1, 7), (4, 9). Assume that R(A, B, C) is the full natural outer join of R1 and R2. Consider the following tuples of the form (A, B, C): a = (1, 5, null), b = (1, null, 7), c = (3, null, 9), d = (4, 7, null), e = (1, 5, 7), f = (3, 7, null), g = (4, null, 9). Which one of the following statements is correct?
Consider the following statements in connection with deflection-type and null-type instruments: 1. Null-type instruments are more accurate than the deflection-type ones. 2. Null-type of instrument can be highly sensitive compared to a deflection-type instrument. 3. Under dynamic conditions, null-type instruments are less preferred to deflection-type instruments. 4. Response is faster in null-type instruments as compared to deflection-type instruments. Which of the above statements are correct?
In a certain code language, O is written as R, R is written as A, A is written as I, I is written as N, N is written as E, E is written as P, P is written as T, C is written as M and L is written as L. How will PORCELAIN be written as in that language?
Consider the following statements for deflection and null type instruments: 1. Deflection type of instruments are more accurate than null type of instruments. 2. Deflection type of instruments can be highly sensitive as compared with the null type of instruments. 3. Null type of instruments are more suitable for measurements under dynamic conditions than deflection type of instruments. Which of the above statements are not correct?
The height of a tree is defined as the number of edges on the longest path in the tree. The function shown in the pseudocode below is invoked as height(root) to compute the height of a binary tree rooted at the tree pointer root. int height (treeptr n) { if (n == NULL) return -1;   if (n →  left == NULL)        if (n →  right == NULL) return 0;        else return ; \(\boxed{B1}\);     // Box 1 else { h1 = height (n →  left);          if (n → right == NULL) return (1+h1);          else { h2 = height (n → right);          return ; \(\boxed{B2}\)   // Box 2                        }            } } The appropriate expressions for the two boxes B1 and B2 are
Point out the error (if any) in the following C code?
#include #include int main(void){ int* p = NULL; struct S *s = NULL; void(*f)(int, double) = NULL; char *ptr = malloc(15); if (ptr == NULL) printf("Out of memory"); free(ptr);}
In a certain code language, W is written as B, K is written as H, L is written as U, N is written as A, O is written as M, E is written as R, D is written as G, G is written as E, then how will KNOWLEDGE be written in that code?
In SQL, the DEFAULT constraint can also be applied as a table level constraint.
A company paid Rs. 6,00,000 as bonus to its employees at different levels A, B and C. Each employee at level A receives one and half times of the amount that was paid to each employee at level B and each employee at level B was paid twice the amount paid to the employee at level C. If 50 employees were on level A, 75 on level B and 100 on level C, how much amount was paid to each employee of level A ?