What is the precise definition of a primary key?
What will be an ideal response?
Column A (or a collection of columns) is the primary key for a table if:
Property 1: All columns in the table are functionally dependent on A.
Property 2: No subcollection of the columns in A (assuming A is a collection of columns and not just a single column) also has property 1.
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Which class contains the method for checking whether a file exists?
a. File b. PrintWriter c. Scanner d. System
Which of the following is a type of software that opens the door for a compromised machine to display all kinds of unsolicited and unwanted advertising, often of an unsavory nature?
A. SA bundle B. Spyware C. Adware D. Cache
Click the ________ arrow in the Text group to access the Create from file option
Fill in the blank(s) with correct word
A grid is the blank space on the top, bottom, left, and right sides of a document.
Answer the following statement true (T) or false (F)