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Database trigger information


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 maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table, new records should also be created in the tables of the taxes, vacations and salaries. Triggers can also be used to log historical data, for example to keep track of employees' previous salaries.

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Database trigger

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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...

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Trigger

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Look up trigger in Wiktionary, the free dictionary. Trigger may refer to: Mononym Trigger (horse), owned by cowboy star Roy Rogers Nickname Trigger Alpert...

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Database

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database features in the form of database triggers. A cloud database relies on cloud technology. Both the database and most of its DBMS reside remotely...

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Schmitt trigger

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In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator...

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Chrono Trigger

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Chrono Trigger (Japanese: クロノ・トリガー, Hepburn: Kurono Torigā) is a 1995 role-playing video game developed and published by Square. It was originally released...

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Active database

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databases include active database features in the form of database triggers. Paton, Norman W.; Díaz, Oscar (1999). "Active database systems" (PDF). ACM Computing...

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Logic bomb

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hide a piece of code that starts deleting files (such as a salary database trigger), should they ever be terminated from the company. Software that is...

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IBM Db2

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execution of an SQL statement; it may, for example, have initiated a database trigger and other SQL statements. Instead of the original SQLCA, error information...

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Data domain

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implemented through a check constraint or, in more complex cases, in a database trigger. For example, a column requiring positive numeric values may have a...

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Database schema

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queues, triggers, types, sequences, materialized views, synonyms, database links, directories, XML schemas, and other elements. A database generally...

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Oracle Database

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Oracle Database (commonly referred to as Oracle DBMS, Oracle Autonomous Database, or simply as Oracle) is a proprietary multi-model database management...

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Myofascial trigger point

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Myofascial trigger points (MTrPs), also known as trigger points, are described as hyperirritable spots in the skeletal muscle. They are associated with...

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PostgreSQL

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(ACID) properties, automatically updatable views, materialized views, triggers, foreign keys, and stored procedures. It is supported on all major operating...

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Trauma trigger

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A trauma trigger is a psychological stimulus that prompts involuntary recall of a previous traumatic experience. The stimulus itself need not be frightening...

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Log trigger

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In relational databases, the log trigger or history trigger is a mechanism for automatic recording of information about changes inserting or/and updating...

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NoSQL

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"NoSQL" was only coined in the early 2000s, triggered by the needs of Web 2.0 companies. NoSQL databases are increasingly used in big data and real-time...

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Stored procedure

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procedures can also be invoked from a database trigger or a condition handler. For example, a stored procedure may be triggered by an insert on a specific table...

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Object database

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object databases also provide systematic support for triggers and constraints which are the basis of active databases. The efficiency of such a database is...

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The Trigger

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extremely specific DNA – making the device a killer. Review of The Trigger The Trigger title listing at the Internet Speculative Fiction Database v t e...

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Hibernation

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tolerance mechanism such as antifreeze proteins. Hibernation induction trigger (HIT) proteins isolated from mammals have been used in the study of organ...

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Outline of databases

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hardware failures. Also called "transaction journal", "database log" or "binary log". Database trigger – procedural code that is automatically executed in...

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Comparison of relational database management systems

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(6): OpenEdge SQL database engine uses Referential Integrity, OpenEdge ABL Database engine does not and is handled via database triggers. Information about...

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Change data capture

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modern database then Change Data Capture is a simple matter of permissions. Two techniques are in common use: Tracking changes using database triggers Reading...

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Postcondition

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Design by contract Hoare logic Invariants maintained by conditions Database trigger Meyer, Bertrand, Object-Oriented Software Construction, second edition...

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Database administration

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Database administration is the function of managing and maintaining database management systems (DBMS) software. Mainstream DBMS software such as Oracle...

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ACID

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defined rules, including constraints, cascades, triggers, and any combination thereof. This prevents database corruption by an illegal transaction. Referential...

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