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  2. Graph Query Language - Wikipedia

    en.wikipedia.org/wiki/Graph_Query_Language

    The RDF model has been standardized by W3C in a number of specifications. The Property Graph model, on the other hand, has a multitude of implementations in graph databases, graph algorithms, and graph processing facilities. However, a common, standardized query language for property graphs (like SQL for relational database systems) is missing.

  3. ISO week date - Wikipedia

    en.wikipedia.org/wiki/ISO_week_date

    A precise date is specified by the ISO week-numbering year in the format YYYY, a week number in the format ww prefixed by the letter 'W', and the weekday number, a digit d from 1 through 7, beginning with Monday and ending with Sunday. For example, the Gregorian date Saturday, 22 February 2025 corresponds to day number 6 in the week number 08 ...

  4. Graph database - Wikipedia

    en.wikipedia.org/wiki/Graph_database

    The equivalent SQL query would have to rely on added data in the table linking people and movies, adding more complexity to the query syntax. These sorts of labels may improve search performance under certain circumstances, but are generally more useful in providing added semantic data for end users.

  5. ISO 8601 - Wikipedia

    en.wikipedia.org/wiki/ISO_8601

    M is the month designator that follows the value for the number of calendar months. W is the week designator that follows the value for the number of weeks. D is the day designator that follows the value for the number of calendar days. T is the time designator that precedes the time components of the representation. H is the hour designator ...

  6. Template:Age in years, months, weeks and days - Wikipedia

    en.wikipedia.org/wiki/Template:Age_in_years...

    {{Age in years, months, weeks and days |month1 = |day1 = |year1 = |month2 = |day2 = | year2 = }} Note that all parameters default to the current date, so for example, the second set of parameters can be left out to calculate elapsed time since a past date:

  7. SQL - Wikipedia

    en.wikipedia.org/wiki/SQL

    SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...

  8. 360-day calendar - Wikipedia

    en.wikipedia.org/wiki/360-day_calendar

    The 360-day calendar is a method of measuring durations used in financial markets, in computer models, in ancient literature, and in prophetic literary genres.. It is based on merging the three major calendar systems into one complex clock [citation needed], with the 360-day year derived from the average year of the lunar and the solar: (365.2425 (solar) + 354.3829 (lunar))/2 = 719.6254/2 ...

  9. Select (SQL) - Wikipedia

    en.wikipedia.org/wiki/Select_(SQL)

    A query includes a list of columns to include in the final result, normally immediately following the SELECT keyword. An asterisk ("*") can be used to specify that the query should return all columns of all the queried tables. SELECT is the most complex statement in SQL, with optional keywords and clauses that include: