There are three main types of metadata: â¢ Descriptive metadata describes a resource for purposes such as discovery and identification.It can include elements such as title, abstract, author, and keywords. â¢ Structural metadata indicates how compound objects are put together, for example, how pages are ordered to form chapters.â¢ Administrative metadata provides information to help manage a resource, such as when and how it was created, file type and other technical information, and who can access it. Structural metadata indicates how compound objects are put together, for example, how pages are ordered to form chapters. â¢ Administrative metadata provides information to help manage a resource, such as when and how it was created, file type and other technical information, and who can access it.
Sabinâs live-virus, oral polio vaccine (administered in drops or on a sugar cube) soon replaced Salkâs killed-virus, injectable vaccine in many parts of the world.
Article Body. Most of the vaccines your child receives are given by shots. One can be given in a nasal spray (a version of the influenza vaccine). In the past, the polio vaccine was placed on a sugar cube and given by mouth (this form of the polio vaccine is no longer available in the United States). But no matter how they are given, the general ideas of the vaccines are all the same. To help you understand how immunizations work, hereâs a little background on the bodyâs immune system and the way it functions. When your child becomes infected, his body relies on his immune system to fight the invading organism.