Citation index (indexing) is an ordered list of cited articles, each accompanied by a list of citing articles. 1. The citing article is identified as source and the cited article as reference. An abstracting and indexing service is a product, a publisher sells, or makes available.

It isn't necessary, but if you really want to ensure that every image is indexed by Google, then it will be beneficial to do this otherwise you might not have them all discovered simply by crawling.

An index is a list of all the names, subjects and ideas in a piece of written work, designed to help readers quickly find where they are discussed in the text. Usually found at the end of the text, an index doesn't just list the content (that's what a table of contents is for), it analyses it.

If writing an index for a book, first identify the key words, major subtopics, and names of significant people and places discussed in the book. Next, make an alphabetical list of these items. Lastly, search and record the page number where each item from the alphabetical list is mentioned in the book.

A journal index, also called a 'bibliographic index' or 'bibliographic database', is a list of journals organized by discipline, subject, region or other factors. Journal indexes can be used to search for studies and data on certain topics. Both scholars and the general public can search journal indexes.

Go to images.google.com, and click the little photo icon on the right of the search bar. You can search by image URL, or upload the image directly to Google to search. You should be able to search by the filename and/or by the Alt text used to describe the image. I would start with the filename.

An index is defined by a field expression that you specify when you create the index. Typically, the field expression is a single field name, like EMP_ID. An index created on the EMP_ID field, for example, contains a sorted list of the employee ID values in the table.