candidate for a key
Смотреть что такое "candidate for a key" в других словарях:
Candidate key — In the relational model, a candidate key of a relvar (relation variable) is a set of attributes of that relvar such that # at all times it holds in the relation assigned to that variable that there are no two distinct tuples with the same values… … Wikipedia
The Manchurian Candidate (1962 film) — For the novel by Richard Condon, see The Manchurian Candidate. For the 2004 film, see The Manchurian Candidate (2004 film) Infobox Film name = The Manchurian Candidate director = John Frankenheimer producer = George Axelrod John Frankenheimer… … Wikipedia
Key, David M(cKendree) — born Jan. 27, 1824, Greene county, Tenn., U.S. died Feb. 3, 1900, Chattanooga, Tenn. U.S. politician. Admitted to the bar in 1850, he practiced law in Chattanooga and became active in Democratic Party politics. He opposed secession by the South… … Universalium
National Organization for Marriage — Motto Protecting Marriage and the Faith Communities that Sustain It Formation 2007 Type NPO … Wikipedia
National Association for Change — Al Jamaʿiyya al Waṭaniyya lit Taghyīr الجمعية الوطنية للتغيير Founder(s) Mohamed ElBaradei Type Pressure group Political group Founded February 2010 … Wikipedia
Natural key — In relational model database design, a natural key is a candidate key that has a logical relationship to the attributes within that row. A natural key is sometimes called a domain key. The main advantage of a natural key over a surrogate key,… … Wikipedia
Consultation Document on the Methods for Selecting the Chief Executive and for Forming the LegCo in 2012 — Participants HK Govt., LegCo, Pan democrats, pro Beijing camp Location Hong Kong Date 18 November 2009 – June 2010 Result … Wikipedia
National Association for the Advancement of Colored People — Abbreviation NAACP … Wikipedia
Students for a Democratic Society — This article is about the 1960s organization. For the more recent organization, see Students for a Democratic Society (2006 organization). Students for a Democratic Society (SDS) was a student activist movement in the United States that was one… … Wikipedia
Treaty establishing a Constitution for Europe — This article is about the abandoned 2004 proposal. For the constitutional basis of the EU, see Treaties of the European Union. Treaty establishing a Constitution for Europe Type Unratified treaty Drafted June 2004 Signed 29 October 2004 Location… … Wikipedia
Coalition for Change — Coalición por el Cambio Leader Sebastián Piñera Founded … Wikipedia
