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Indexing is the process of creating indexes for record collections. Having indexes allows researchers to more quickly find records for specific individuals; without them, researchers might have to look through hundreds or thousands of records to locate an individual record.
Search engine indexing collects, parses, and stores data to facilitate fast and accurate information retrieval. Index design incorporates interdisciplinary concepts from linguistics, cognitive psychology, mathematics, informatics, and computer science.
An index is a method of sorting data by creating keywords or a listing of the data. index can also cause write operations to take more time, as the index must be updated when the underlying table is updated.Indexes can also be created on functions or expressions. A unique index prevents duplicate entries in the index and the related table, thus acting as a constraint. Column order is also an important aspect of indexing.
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An index is contains information on all the websites the search engine was able to find. If a website is not in a search engine’s index, users will not be able to find it using that search engine. Search engines regularly update their indexes.
Index is a term used to refer to the Spider (worm) search search engine Google to find data from one website then stored back, evaluate and compare the reputation of that data
Index is generally word t o known as crawl or we can say spider where search engine crawl the data and related source and make a copy to store it's database.
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A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure