The else clause can only be used with an if statement.

When ROM receives power, its RAM BIOS instructions are activated and they load the operating system to the ROM.

Answer the following statement true (T) or false (F)

Use the key statement of XML Schema to de?ne the following key constraints for the document in Figure 15.4

a. The key for the collection of all Student elements b. The key for the collection of all Course elements c. The key for the collection of all Class elements