From the post:
Almost all developers are heard about Triggers and all knows that mysql support triggers and triggers are adding an advantages to mysql.Triggers are the SQL statements are stored in database.
Triggers are the SQL statements which add functionality to your tables so that they perform a certain series of actions when a some queries are executed. We can say in easy language is Triggers are some conditions performed when INSERT, UPDATE or DELETE events are made in the table without using two separate queries.
Sometimes developers are prefer to use store procedures rather than triggers but triggers are one kind of store procedures which contain procedural code into body.The difference between a trigger and a stored procedure is that a trigger is called when an event occurs in a table whereas a stored procedure must be called explicitly.
Short overview of triggers in MySQL.
Possibly useful if you are using a relational backend for your topic map engine.
Should topic map engines support the equivalent of triggers?
As declared by a topic map?
Now that would be clever, to have a topic map carry its triggers around with it.
Admittedly, interactive data structures aren’t the norm, yet, but they are certainly worth thinking about.