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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Forms Data Format is defined in the PDF specification (since PDF 1.2). The Forms Data Format can be used when submitting form data to a server, receiving the response, and incorporating it into the interactive form. It can also be used to export form data to stand-alone files that can be imported back into the corresponding PDF interactive form.

  3. Forth (programming language) - Wikipedia

    en.wikipedia.org/wiki/Forth_(programming_language)

    The basic data structure of Forth is the "dictionary" which maps "words" to executable code or named data structures. The dictionary is laid out in memory as a tree of linked lists with the links proceeding from the latest (most recently) defined word to the oldest, until a sentinel value, usually a NULL pointer, is found. A context switch ...

  4. Relational database - Wikipedia

    en.wikipedia.org/wiki/Relational_database

    Relational database. A relational database ( RDB [1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [2] A database management system used to maintain relational databases is a relational database management system ( RDBMS ). Many relational database systems are equipped with the option of using SQL ...

  5. Document-oriented database - Wikipedia

    en.wikipedia.org/wiki/Document-oriented_database

    A document-oriented database provides APIs or a query/update language that exposes the ability to query or update based on the internal structure in the document. This difference may be minor for users that do not need richer query, retrieval, or editing APIs that are typically provided by document databases.

  6. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    Open-source desktop search tool for Unix/Linux GPL [8] Spotlight: macOS: Found in Apple Mac OS X "Tiger" and later OS X releases. Proprietary Strigi: Linux, Unix, Solaris, Mac OS X and Windows: Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02 [9]. LGPL v2 [10] Terrier Search Engine: Linux, Mac OS X, Unix

  7. Apache Lucene - Wikipedia

    en.wikipedia.org/wiki/Apache_Lucene

    Apache License 2.0. Website. lucene .apache .org. Apache Lucene is a free and open-source search engine software library, originally written in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License. Lucene is widely used as a standard foundation for production search applications.

  8. YANG - Wikipedia

    en.wikipedia.org/wiki/YANG

    YANG is a modular language representing data structures in an XML tree format. The data modeling language comes with a number of built-in data types. Additional application specific data types can be derived from the built-in data types. More complex reusable data structures can be represented as groupings. YANG data models can use XPATH ...

  9. Gopher (protocol) - Wikipedia

    en.wikipedia.org/wiki/Gopher_(protocol)

    The Gopher protocol (/ ˈ ɡ oʊ f ər /) is a communication protocol designed for distributing, searching, and retrieving documents in Internet Protocol networks. The design of the Gopher protocol and user interface is menu-driven, and presented an alternative to the World Wide Web in its early stages, but ultimately fell into disfavor, yielding to Hypertext Transfer Protocol ().