Database trigger

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• Database trigger — A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for keeping the integrity of the information on the database. For example,… …   Wikipedia

• Trigger — may refer to: * Trigger (firearms), a mechanism that actuates the firing of firearms * Trigger pad, a device used in electronic percussion * Image trigger, a device used in highspeed cameras * Schmitt trigger, an electronic circuit * USS Trigger… …   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

• Database audit — Database auditing involves observing a database so as to be aware of the actions of database users. Database administrators and consultants often set up auditing for security purposes, for example, to ensure that those without the permission to… …   Wikipedia

• Database design — is the process of producing a detailed data model of a database. This logical data model contains all the needed logical and physical design choices and physical storage parameters needed to generate a design in a Data Definition Language, which… …   Wikipedia

• Database administration and automation — Database administration is the function of managing and maintaining database management systems (DBMS) software. Mainstream DBMS software such as Oracle, IBM DB2 and Microsoft SQL Server need ongoing management. As such, corporations that use… …   Wikipedia

• Database storage structures — Database tables/indexes are typically stored on hard disk in one of many forms, ordered/unordered Flat files, ISAM, Heaps, Hash buckets or B+ Trees. These have various advantages and disadvantages discussed in this topic. The most commonly used… …   Wikipedia

• Database management system — Ein Datenbanksystem (DBS) ist ein System zur elektronischen Datenverwaltung. Die wesentliche Aufgabe eines DBS ist es, große Datenmengen effizient, widerspruchsfrei und dauerhaft zu speichern und benötigte Teilmengen in unterschiedlichen,… …   Deutsch Wikipedia

• Database normalization — In the design of a relational database management system (RDBMS), the process of organizing data to minimize redundancy is called normalization. The goal of database normalization is to decompose relations with anomalies in order to produce… …   Wikipedia

• Database transaction — A transaction comprises a unit of work performed within a database management system (or similar system) against a database, and treated in a coherent and reliable way independent of other transactions. Transactions in a database environment have …   Wikipedia