how to insert the data through views? The view is depending
upon more than two tables?
how to update materalized views?
Answers were Sorted based on User's Feedback
Answer / rajesh venati
If we create a view on more than one table, or using
distinct keyword or use any group functions it is called
complex view.
If we want perform DML operations on complex views the we
will go for Instead of Triggers.Through the instead of
triggers we can perform DML operations on complex views.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / monika
by creating instead of trigger on table,we can update base
table through view
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / manikanta.srinu
DML Operations also is done by the view,if view have only
one table.For multiple tables in a view,DML operation was
not support.
how to update materalized views?
If ur master table is updated, your materialized view will
automatically get refreshed if ur materialized view is
create with ON COMMIT option. Else, you
have to REFRESH evertime once ur master is
inserted/deleted/updated.
CREATE MATERIALIZED VIEW departments FOR UPDATE AS
SELECT * FROM departmentsworld;
| Is This Answer Correct ? | 1 Yes | 4 No |
Which version of sql do I have?
What is user define exception and example
What are advantages of Stored Procedures?
how to shut down the server with 'mysqladmin'? : Sql dba
sql query to get zero records from a table having n no of records
How many parts of a pl sql block are optional?
i have a table like this. i want to output like this c1 c2 c1 c2 1 10 1 10 2 20 2 30 3 30 3 60 4 40 4 100 5 5 5 105 c1 and c2 are columns in a table .i want output like this c2 values are 10,10+20,10+20+30,10+20+30+40.10+20+30+40+5. write a sql query.pls help this i want urgent.
2 Answers IBM, Loginworks, OFSS,
How to create a menu in sqlplus or pl/sql?
How many sql statements are used?
what does it mean to have quoted_identifier on? : Sql dba
What is java sql driver?
Is a secondary key the same as a foreign key?
Oracle (3253)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)