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Indexes

Indexes (plural of index) serve as organized pointers, providing a way to locate information or specific items within a larger collection. They act as a system of cross-references, allowing users to quickly find what they need. In databases, they are used to speed up searches. In books, indexes list key terms and topics along with the page numbers where they appear. Similarly, in a financial context, an index can represent a statistical measure of changes in a securities market or a specific portfolio.

Indexes meaning with examples

  • The library's card catalog, now largely digitized, used to rely heavily on physical indexes to help patrons find books by author, title, or subject. Researchers would meticulously search these indexes to locate sources relevant to their studies. Efficient indexes saved countless hours of manual searching, allowing for quicker access to information. Understanding how to utilize these indexes was a critical skill for effective research, before the advent of more accessible electronic search capabilities.
  • Google's search engine creates massive indexes of the internet to allow for fast results. When a user types in a query, the algorithm searches its index of websites. Sophisticated indexing includes analysis of website content to provide accurate results. Effective internet indexing requires constant updating and evolution to accommodate new content, allowing it to remain useful, even in the face of rapid website deployment.
  • Financial markets rely on indexes, like the S&P 500, to track the performance of a group of stocks. Investors use these indexes to gauge market trends and diversify their portfolios, and index funds are a popular investment strategy. These indexes, composed of specific company stocks, provide a single measure of overall market direction. The daily fluctuation of financial indexes drives important market information.
  • To improve database query performance, database administrators implement indexes on frequently searched fields. These indexes create separate data structures that map values to their locations. Efficient indexing dramatically reduces search times, particularly when querying very large datasets. Without indexes, the database would have to scan every record to find a match, slowing down the overall operation.

Indexes Crossword Answers

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