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  2. Indexer (programming) - Wikipedia

    en.wikipedia.org/wiki/Indexer_(programming)

    WriteLine ($"{member} is the member number {index} of the {nameof(doeFamily)}");}} In this example, the indexer is used to get the value at the nth position, and then to get the position in the list referenced by its value.

  3. Database index - Wikipedia

    en.wikipedia.org/wiki/Database_index

    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. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.

  4. Embedded SQL - Wikipedia

    en.wikipedia.org/wiki/Embedded_SQL

    Ada Pro*Ada was officially desupported by Oracle in version 7.3. Starting with Oracle8, Pro*Ada was replaced by SQL*Module but appears to have not been updated since. [7] SQL*Module is a module language that offers a different programming method from embedded SQL.

  5. Bitmap index - Wikipedia

    en.wikipedia.org/wiki/Bitmap_index

    A bitmap index is a special kind of database index that uses bitmaps. Bitmap indexes have traditionally been considered to work well for low- cardinality columns , which have a modest number of distinct values, either absolutely, or relative to the number of records that contain the data.

  6. Apache Solr - Wikipedia

    en.wikipedia.org/wiki/Apache_Solr

    Solr (pronounced "solar") is an open-source enterprise-search platform, written in Java.Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features [2] and rich document (e.g., Word, PDF) handling.

  7. Category:Database index techniques - Wikipedia

    en.wikipedia.org/wiki/Category:Database_index...

    This category includes indexing techniques for database management systems. Subcategories. This category has the following 3 subcategories, out of 3 total. B. B-tree ...

  8. Bigtable - Wikipedia

    en.wikipedia.org/wiki/Bigtable

    Bigtable development began in 2004. [1] It is now used by a number of Google applications, such as Google Analytics, [2] web indexing, [3] MapReduce, which is often used for generating and modifying data stored in Bigtable, [4] Google Maps, [5] Google Books search, "My Search History", Google Earth, Blogger.com, Google Code hosting, YouTube, [6] and Gmail. [7]

  9. Tuple relational calculus - Wikipedia

    en.wikipedia.org/wiki/Tuple_relational_calculus

    We define headers as finite subsets of C. A relational database schema is defined as a tuple S = (D, R, h) where D is the domain of atomic values (see relational model for more on the notions of domain and atomic value), R is a finite set of relation names, and h : R → 2 C. a function that associates a header with each relation name in R ...