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Author Question: Only the 64-bit version of the Java Runtime Environment should be installed when using a 64-bit ... (Read 72 times)

jazziefee

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on: Jul 7, 2018
Only the 64-bit version of the Java Runtime Environment should be installed when using a 64-bit operating system.
 
  Indicate whether the statement is true or false

Question 2

What are SQL triggers and how are they used?
 
  What will be an ideal response?


vickybb89

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Reply #1 on: Jul 7, 2018
Answer to Question 1

FALSE

Answer to Question 2

An SQL trigger is a stored program that is attached to a table or view. The trigger is invoked by the DBMS whenever an insert, update or delete request is made on the table or view with the trigger. There are three commonly used triggers: BEFORE, INSTEAD OF, and AFTER (MS SQL server does not support BEFORE). This creates a set of nine possible trigger types: BEFORE + INSERT or UPDATE or DELETE, INSTEAD OF + INSERT or UPDATE or DELETE, and AFTER + INSERT or UPDATE or DELETE. Triggers are used (among other things) for (1 ) providing default values, (2 ) validity checking, (3 ) updating views, and (4 ) enforcing referential integrity actions.


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