SQL Trigger query

SQL Trigger query

Why we use the Trigger and what it's uses?

View Answers

March 15, 2012 at 4:37 PM

A database trigger is procedural code that is automatically executed in response to certain events on a particular table in a database. Triggers can restrict access to specific data, perform logging, or audit data modifications. Triggers supplement the standard capabilities of your database to provide a highly customized database management system. For example, you can use triggers to:

1)Automatically generate derived column values.

2)Enforce referential integrity across nodes in a distributed database

3)Enforce complex business rules

4)Provide transparent event logging

5)Provide auditing

6)Maintain synchronous table replicates

7)Gather statistics on table access

8)Modify table data when DML statements are issued against views

9)Publish information about database events, user events, and SQL statements to subscribing applications

10)Restrict DML operations against a table to those issued during regular business hours

11)Enforce security authorizations

12)Prevent invalid transactions









Related Tutorials/Questions & Answers:
using trigger - SQL
-update-trigger.shtml http://www.roseindia.net/sql/trigger/mysql-trigger-after...using trigger  sir i want to use this trigger in ado.net. how it is possible ? Create trigger tr1 on student after update as begin update m
Create After Update Trigger in SQL
Create After Update Trigger in SQL       After Trigger in SQL is fired before update... The Tutorial illustrate an example from 'Create After Update Trigger in SQL
Advertisements
Create Delete Trigger in SQL
Create Delete Trigger in SQL       Create Delete Trigger in SQL fire this trigger before... Trigger in SQL'. To understand this example, we create a table 'Stu_Table
Create After Insert Trigger in SQL
Create After Insert Trigger in SQL   ... illustrate a example from 'Create After Insert Trigger in SQL'. In this Example... The Query create a  trigger stu_insert on table 'stu_table
How to trap Trigger Error - SQL
How to trap Trigger Error  Hi Guys, Can you please help with my problem?.. Is there a way in where I can trap all SQL error and place it under... NVARCHAR(2000) ) select * froM ERROR_LOG CREATE OR REPLACE TRIGGER
Sql Query
Sql Query  Is this query work in Db2 or not ? Select * from FORUM LIMIT 2
Sql Query
Sql Query  Is this query work in Db2 or not ? Select * from FORUM LIMIT 2
sql query
sql query  two tables are emp,loc write a query to display all the emp information whose locname not equal to bangalore
sql query
sql query  hi friend, Im doing a project,in that a main id... numbers of sids.i want to delete the sid based on the mid.for that i need sql query plz help to me
sql query
sql query  hi friend, Im doing a project,in that a main id... numbers of sids.i want to delete the sid based on the mid.for that i need sql query plz help to me
Sql Query
Sql Query  Hi M Navjeet Ghai I want to know How to Show A name(Like Navjeet Ghai And Manpreet Singh Sodhi) of employees from a employee table as N.Ghai & M.S.Sodhi by using sql query
sql query
sql query  hi friend, Im doing a project,in that a main id... numbers of sids.i want to delete the sid based on the mid.for that i need sql query plz help to me
SQL Query
SQL Query  Selecting the third highest salary of Employee without using any subquery?   Here is a query: SELECT salary FROM employee ORDER BY salary DESC LIMIT 2,1
SQL QUERY
SQL QUERY  am a having a table 'PROGRAMMER' with columns... C pascal Bhanu Sql... Pascal Sql Mahesh DBASE Cobol
Create Before Insert Trigger in SQL
Create Before Insert Trigger in SQL       The Create Before Insert Trigger in SQL fires the trigger..._TO_REPLACE_1 The given Tutorial describe you a code on 'Create Before Insert Trigger
Create After Update Trigger in SQL
Create After Update Trigger in SQL       After Trigger in SQL is fired before update... The Tutorial illustrate an example from 'Create After Update Trigger in SQL
Create Before Update Trigger in SQL
Create Before Update Trigger in SQL       Create Before Update Trigger in SQL is used in SQL... 'Create Before Update Trigger in SQL' . To understand this example we
upgrading sql query join
upgrading sql query join  upgrading sql query join
Create Before Update Trigger in SQL
Create Before Update Trigger in SQL       Create Before Update Trigger in SQL is used in SQL, if a trigger monitoring for changes to a column of the table
SQL Query - SQL
SQL Query  Hi I would like to know how to create a SQL query which would copy values from a field which contains multiple values to an existing... | +-----+-----------+-------------+ Query: INSERT INTO table2 (fruit1, fruit2, fruit3
Create Before Insert Trigger in SQL
Create Before Insert Trigger in SQL       The Create Before Insert Trigger in SQL fires... Trigger in SQL'. To grasp this example, we create a table 'Stu_Table
sql query
sql query  SQL QUERY BROWSER declare @cout00 int declare @cout01 int declare @cout10 int declare @cout11 int declare @c1 float declare @gss float...); this is the query i have written for the table "dpscomp" - station date month
sql query - JDBC
sql query  I need a SQL query to add data into database
optimize sql query
optimize sql query  How to optimize sql query in mysql? Thanks
query - SQL
tell me how to write the query in database but not jsp code. thank u
SQL query
SQL query  I need to combine two tables in order to get the values. As an example we have three tables having namely usertable,job table and jobaccess table. In usertable (Userid,Empid,name,Role) details have been stored
sql query - SQL
sql query  hi sir,i have a month and year numbers,when i am enter a month and year in sql query then i want results for 1st day of month to last day of month in that year for that month plz provide a solution
SQL query - SQL
SQL query  hi sir/Madam i am using MS Access where i have table like Fees_Struc: Amount (INT) Due_Date (Date) Fees_Pay: Paid(INT) Student_Bal: Panalty(INT) my problem is when the Due_date is equal
Hibernate SQL Query/Native Query
This tutorial describes Hibernate SQL Query, which is also known as Native Query
SQL QUERY - JDBC
SQL QUERY  I m running a query using apache tomcat the sql query is on adding an employee in the database whenever i click on add after inserting the values i am getting a java.lang.nullpointer exception
display sql query in hibernate
display sql query in hibernate  If you want to see the Hibernate generated SQL statements on console, what should we do
Create Delete Trigger in SQL
Create Delete Trigger in SQL       Create Delete Trigger in SQL fire this trigger before... Trigger in SQL'. To understand this example, we create a table 'Stu_Table
Sql query from oracle
Sql query from oracle  Please help me that I want to get the table names form the existing database who does it having eid coloumn plz provide me query in oracle database
trigger
trigger  write a trigger to see every manager must be highest salary
Update SQL Query Example
Update SQL Query Example  Hi, I am beginner in SQL (MySQL) and trying to learn Update SQL Query with Example code. Can anyone explain me the SQL Update query with an example code? Thanks   Hi, A simple example
Named ? SQL query in hibernate
Named ? SQL query in hibernate  What is Named SQL query in hibernate... putting the sql queries to various places in between code. sample.hbm.xmlADS...; </property> </class> <query name
trigger
trigger  write a trigger program before insert into salary that it must not below Rs 1000
trigger
trigger  write a trigger program before insert into salary that it must not below Rs 1000
sql query search function
sql query search function  i have a textbox on a form , i like a search a data in the form, when i give whatever name and id or etc..its will search and show the same form , so help me using jsp
Hibernate Native SQL Query Introduction
In this section, you will learn Hibernate Native SQL query
ModuleNotFoundError: No module named 'sql-query'
ModuleNotFoundError: No module named 'sql-query'  Hi, My Python... 'sql-query' How to remove the ModuleNotFoundError: No module named 'sql... have to install padas library. You can install sql-query python with following
SQL QUERY ERROR
SQL QUERY ERROR  Im writing a query which shows error of INVALID CHARACTER The Query is Insert into PMST_EMP_MST(PMSNUM_EMP_ID,PMSSTR_EMP... THE FORM IS THROWING THE ERROR OF INVALID CHARACTER BUT THE SAME QUERY IS RUNNING
Doubt In Sql query
Doubt In Sql query  Hi Have a glance @ http://img98.imageshack.us/img98/4348/tableo.png For a single country there may be n numbers of country... createdt. I have tries with this query but it is returning redundancy records
Create After Insert Trigger in SQL
Create After Insert Trigger in SQL   ... illustrate a example from 'Create After Insert Trigger in SQL..._TO_REPLACE_3 The Query create a  trigger stu_insert on table
SQL Query - JSP-Servlet
SQL Query   AS mysql backend updation query shows a syntax error. I gave the full query and the generated error here. Please send me the correct query anyone. st.executeUpdate("update stud_detail set name='"+newname
Sql query Duplicate
Sql query Duplicate  I have a Employee table with duplicate ID values... 3 D Delhi Then we have used the following query to find the duplicate data...'); You can use following query to find the duplicate id: select id, count(id
SQL date query
SQL date query  how to get ( 15 march 2011) and (15/03/2011) output using SQL   Use the following queries to get the data from database in the given format. For (15 march 2011) format: SELECT DATE_FORMAT(dob, '%d %M
Sql Join Query
Sql Join Query  aTable Name : TblState Stid StateName CountryId --------------------------------------------- 01 TN 01 02 KR 01 03 KL 01 04 WB 01 05 New
JDBC- SQL spatio-temporal query
JDBC- SQL spatio-temporal query  Any one give me a JDBC sql query for my spatio temporal query? Trajectory table OBJID PLACE 7 H 8 Q 9 W 10... as shown in above. I want a spatio-temporal query using JDBC-SQL to retrieve
JDBC- SQL spatio-temporal query
JDBC- SQL spatio-temporal query  Any one give me a JDBC sql query for my spatio temporal query? Trajectory table OBJID PLACE 7 H 8 Q 9 W 10... as shown in above. I want a spatio-temporal query using JDBC-SQL to retrieve

Ads