Answer:
The answer to this question is given below in this explanation section.
Explanation:
In the relationship model of database a primary key is a specific choice of a minimal set of attributes that uniquely specific a tuple in a relation.Informally a primary key is which attribute and in simple cases are simple a single attribute.More formally a primary key is a choice of candidate key any other candidate key is an alternate key.
A primary key may consists of real word observable in which way it is called natural key,while an attribute created to function as a key and not use for identification outside the database is called a surrogate key.For example for a database of people time and location of birth could be a natural key.National identification number is another example of an attribute that may be used as an natural key.
Answer:
def UpdateScore(score, total):
if total % 2:
print total, "is odd, so adding 10"
score += 10
else:
print total, "is even, so subtracting 5"
score -= 5
print "The score is now",score
return score
score = 0
score = UpdateScore(score, 3)
score = UpdateScore(score, 6)
Explanation:
The % operator returns the remainder after division. So if you divide by 2, the remainder is either 0 or 1, where 0 indicates an even number, and 1 indicates an odd number. The above program shows that.
Explanation:
A computer programmer, sometimes called a software developer, a programmer or more recently a coder (especially in more informal contexts), is a person who creates computer software.
1. It is based on scientific and technological advancements.
2. It is more a practical discipline and less a theoretical one.
3. It is a fast growing modern discipline.
4. It makes use of the research findings of psychology, sociology, engineering, sciences and social psychology etc., and applies the same to the field of education.
5. It brings pupils, teachers and technical means together in an effective way.
6. It is the science of techniques and methods. It locates the problems in the field of education, remedies them and ultimately aims at improving the education system.
7. It is bound to improve the teacher, the learner and the teaching learning process.
Insert tab then Illustration group
