When a statement inserts, modifies, or deletes rows in the related table, a trigger is activated. These are row operations that act as triggers. Rows can be inserted using the INSERT or LOAD DATA statements, and each entered row triggers an insert trigger.
To identify the trigger body, use the BEGIN and END delimiters: ON table name>, CREATE TRIGGER TRIGGER NAME TRIGGER TIME TRIGGER EVENT ON TRIGGER NAME TRIGGER TIME TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRIGGER EVENT ON TRI Before constructing a trigger with numerous operations, make sure to alter the default delimiter.
Triggers can be called in MySQL in reaction to INSERT, UPDATE, or DELETE events. Row-level triggers and statement-level triggers are the two types of triggers defined by the SQL standard.
Triggers are used to keep data's referential integrity by modifying it in a methodical manner. Each trigger is associated with a single table in the database. Triggers and stored procedures are similar in that they both contain procedural logic that is stored at the database level.
A database trigger is a piece of procedural code that is executed automatically in response to certain events on a database table or view. The trigger is mostly used to ensure that the database's information is accurate.
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DURGESH LAL KAVI
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EASY TO UNDERSTAND IN OUR OWN LANGUAGE
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