delete relationship

См. также в других словарях:

• Delete (SQL) — In the database structured query language (SQL), the DELETE statement removes one or more records from a table. A subset may be defined for deletion using a condition, otherwise all records are removed.[1] Contents 1 Usage 2 Examples 3 …   Wikipedia

• Ankh-Morpork City Watch — The Ankh Morpork City Watch is a fictional police force within the Discworld series of books by Terry Pratchett. It is based in the city state of Ankh Morpork on the Discworld. The Watch was originally two units, the Day Watch and the Night Watch …   Wikipedia

• B-tree — In computer science, a B tree is a tree data structure that keeps data sorted and allows searches, insertions, and deletions in logarithmic amortized time. It is most commonly used in databases and filesystems. In B trees, internal (non leaf)… …   Wikipedia

• Propagation constraint — In database systems, a propagation constraint details what should happen to a related table when we update a row or rows of a target table (Paul Beynon Davies, 2004, p.108). Tables are linked using primary key to foreign key relationships. It is… …   Wikipedia

• SQL-92 — SQL (das Kürzel für Structured Query Language; offizielle Aussprache [ɛskjuːˈɛl], häufig auch [ˈsiːkwəl] →SEQUEL), ist eine Datenbanksprache zur Definition, Abfrage und Manipulation von Daten in relationalen Datenbanken. SQL ist von ANSI und ISO… …   Deutsch Wikipedia

• SQL-99 — SQL (das Kürzel für Structured Query Language; offizielle Aussprache [ɛskjuːˈɛl], häufig auch [ˈsiːkwəl] →SEQUEL), ist eine Datenbanksprache zur Definition, Abfrage und Manipulation von Daten in relationalen Datenbanken. SQL ist von ANSI und ISO… …   Deutsch Wikipedia

• Structured Query Language — SQL (das Kürzel für Structured Query Language; offizielle Aussprache [ɛskjuːˈɛl], häufig auch [ˈsiːkwəl] →SEQUEL), ist eine Datenbanksprache zur Definition, Abfrage und Manipulation von Daten in relationalen Datenbanken. SQL ist von ANSI und ISO… …   Deutsch Wikipedia

• Criticism of Facebook — Facebook s growth as an Internet social networking site has met criticism on a range of issues, including online privacy, child safety, and the inability to terminate accounts without first manually deleting the content. In 2008, many companies… …   Wikipedia

• Characters of Smallville — The season four cast (clockwise from left) Allison Mack, John Glover, Erica Durance, Jensen Ackles, Annette O Toole, John Schneider, Michael Rosenbaum, Tom Welling and Kristin Kreuk contains the characters who have been on the show the longest,… …   Wikipedia

• GLaDOS — GLaDOS, as she appears in Portal 2 Series Portal First game Portal (2007) Created by Erik Wolpaw Kim Swift …   Wikipedia

• Database — A database is an organized collection of data for one or more purposes, usually in digital form. The data are typically organized to model relevant aspects of reality (for example, the availability of rooms in hotels), in a way that supports… …   Wikipedia