Answer:
Primary key retains its uniqueness even after you remove some of the fields.
Explanation:
I am assuming that this question is related to database. Therefore, I am answering it according to database context.
In database, you can have multiple rows and columns. Each column shows a specific attribute while each row plots the data according to the attributes. However, there is the first column of each of main table that has unique set of values. It is called the Primary Key. Some key features of primary key are:
- It always contains the unique value.
- Its value cannot be null.
- A table can have at max one primary key.
- It can be the combination of multiple columns but it must be unique.
Therefore, the primary key has the ability to retain its uniqueness even after you remove some of the fields.
Answer:
return 8 * x
Explanation:
Given
The attached code segment
Required
Which single statement can replace the program body
From calculate(), we have:
The first line (x = x + x) implies that:
So, on the next line; 2x will be substituted for x
i.e.
becomes
So, on the third line; 4x will be substituted for x
i.e.
becomes
In programming: 8x = 8 * x:
This means that: return 8 * x can be used to replace the body
I'd say
TRUE
It is always important to have a correct exposure in
rendering a highlight tone on a print. To find the correct highlight exposure, make
test strips using pieces of paper separately to the area of the negative
containing the most the most critical highlight. Once you have enough test
strips, you should pick the one that contains the best highlight rendering.
Exposure time of that test strip is the correct exposure.
5GL or the fifth-generation language is programming that uses a visual or graphical development interface to create source language that is usually compiled with a 3GL or 4GL language compiler. Fifth Generation Programming or Visual programming language, is also known as natural language. It provides a visual or graphical interface, called a visual programming environment, for creating source codes.
