Query to get the View Definition in POSTGRES Database

Unlike the other databases Teradata and Oracle, We need to get the view definition in POSTGRE database from pg_views table.

Query:

SELECT definition FROM pg_views WHERE viewname='<View_name>';

The above query will give us the complete view definition.

To see only columns and it's datatypes, we can use below:

\d+ <view_name>;

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Comparing Objects in Informatica

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Target Load Type - Normal or Bulk in Session Properties

We can see the Target load type ( Normal or Bulk) property in session under Mapping tab and we will go for Bulk to improve the performance of session to load large amount of data. SQL loader utility will be used for Bulk load and it will not create any database logs(redolog and undolog), it directly writes to data file.Transaction can not be rolled back as we don't have database logs.However,Bulk loading is very as compared to Normal loading. In target if you are using Primary Key or Primary Index or any constraints you can't use Bulk mode. We can see this property in the below snap shot.

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