A link is a popular way to describe relationships in a relational database.
There are three types of relationships (links) between tables:
1. One-to-one <span>relationship , that allows only one record on each side of the relationship.
2. </span>One-to-many <span>relationship, that allows a single record in one table to be related to multiple records in another table.
3. </span>Many-to-many<span> relationship, in which many records in a table can link to many records in another table. F</span>
Answer:
13.0
Explanation:
The method doubleVal() is created to accept a single parameter of type double.
It multiplies what ever the value of the parameter is and returns the resulting value.
In this question The method is called within this output statement System.out.println(doubleVal(val)); (Note that val had already been declared and assigned the value of 6.5)
The value 6.5 is doubled and outputed to the screen
The answer is a Scanning Electron Microscope
It is important to obtain and prepare proper samples when using SEM. The sample’s size, state, and shape are things that should be considered before the sample preparation. Some samples need to be coated. Most metals require no preparation since they can easily conduct electricity. Non-metals, however, needs to be coated with a thin layer of gold. Gold is the ideal non-metal and works most of the times.
Virus.
A virus is a malicious program or script that Spreads.
Malware, however, will not spread.
Viruses can spread without a victim's permission because it is automated to do so.
For example, the Melissa virus would look like a file attachment that used reverse psychology to make you open it. From there, it goes through the first 50 email contacts stored on your computer and sends the virus to them from your computer.
Answer:
ask customers to use strong passwords to protect their accounts
