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  2. Data deduplication - Wikipedia

    en.wikipedia.org/wiki/Data_deduplication

    When files with same hashes are found then the file copy is removed and the new file points to the old file. Unlike hard links however, duplicated files are considered to be separate entities and if one of the duplicated files is later modified, then using a system called copy-on-write a copy of that changed file or block is created. The ...

  3. pandas (software) - Wikipedia

    en.wikipedia.org/wiki/Pandas_(software)

    To avoid this ambiguity, Pandas supports the syntax data.loc['a'] as an alternative way to filter using the index. Pandas also supports the syntax data.iloc[n], which always takes an integer n and returns the nth value, counting from 0. This allows a user to act as though the index is an array-like sequence of integers, regardless of how it is ...

  4. Data redundancy - Wikipedia

    en.wikipedia.org/wiki/Data_redundancy

    For instance, when customer data are duplicated and attached with each product bought, then redundancy of data is a known source of inconsistency since a given customer might appear with different values for one or more of their attributes. [4]

  5. Third normal form - Wikipedia

    en.wikipedia.org/wiki/Third_normal_form

    The third normal form (3NF) is a normal form used in database normalization. 3NF was originally defined by E. F. Codd in 1971. [2] Codd's definition states that a table is in 3NF if and only if both of the following conditions hold: The relation R (table) is in second normal form (2NF).

  6. Duplicate code - Wikipedia

    en.wikipedia.org/wiki/Duplicate_code

    In computer programming, duplicate code is a sequence of source code that occurs more than once, either within a program or across different programs owned or maintained by the same entity. Duplicate code is generally considered undesirable for a number of reasons. [ 1 ]

  7. Inverted index - Wikipedia

    en.wikipedia.org/wiki/Inverted_index

    In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from content, such as words or numbers, to its locations in a table, or in a document or a set of documents (named in contrast to a forward index, which maps from documents to content). [1]

  8. Piece table - Wikipedia

    en.wikipedia.org/wiki/Piece_table

    The relative index in that entry is 15-11 = 4, which is added to the start position of the entry in the buffer to obtain index of the letter: 4+17 = 21. The value of Index(15) is the 21st character of the "add file" buffer, which is the character "o". For the buffers and piece table given above, the following text is shown: Lorem ipsum dolor ...

  9. Wang Wang and Fu Ni - Wikipedia

    en.wikipedia.org/wiki/Wang_Wang_and_Fu_Ni

    Wang Wang in 2011. Wang Wang (born 31 October 2005) and Fu Ni (born 23 August 2006) are a pair of giant pandas who lived at the Adelaide Zoo from 2008 until 2024. Born at the Wolong Giant Panda Research Centre in China, the pair relocated to Adelaide Zoo in Adelaide, South Australia, on 29 November 2009.