In a real-world environment, changing granularity requirements might dictate changes in primary key selection, and those changes might ultimately require the use of surrogate keys.
Explanation:
A surrogate key is a unique identity as an object or entity. It is used as an object in the database and as an entity in the modern world. Surrogate key is not a natural key hence it cannot be derived from application data.
Advantages of using surrogate key:
- They are unique
- They have uniform rules
- It allows unlimited values
- It stands the test of time
Answer:
a. A nonconstant pointer to nonconstant data
Explanation:
Pointer can be used to pass an argument by reference. Pointers may be assigned to any integer value. Functions parameters are passed by an array. The function which modifies an array by arithmetic pointer is nonconstant pointer to nonconstant data to process every value in array. Pointer arithmetic allows us to perform integer additions or subtractions for the operation in pointer.
Explanation:
Type the correct answer in the box. Spell all words correctly.
Ben has to type a long letter to his friend. What is the correct keying technique that Ben should use?
To prevent strain and key correctly, Ben should use his fingers gently over the keys with his wrist in a flat position.
Relational operators allow an end user to <u>compare</u> numbers.
<h3>What are
relational operators?</h3>
Relational operators can be defined as a programming language construct which allows an end user to compare both numbers and char values.
Also, it can be used to determine whether one number is less than (<), greater than (>), equal to (=), or not equal to another.
This ultimately implies that, relational operators allow an end user to <u>compare</u> numbers.
Read more on relational operators here: brainly.com/question/14995818
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