What is constraint based loading in Informatica?

What is constraint based loading in Informatica?

Constraint-Based Loading is used to load the corresponding transformed row first to the primary key table, then to any foreign key tables. In the Workflow Manager, you can specify constraint-based loading for a session. When you select this option, the Integration Service orders the target load on a row-by-row basis.

What is difference between target load and constraint loading?

Constrained based load order is used to ensure loading parent table before child is loaded to manage FK constraint in the target database. This is within single pipeline or data stream in a mapping. Target load order is used to manage load sequence across pipelines / data streams in a mapping.

What is constraint base loading explain with the help of example?

Constraint based load ordering is used to load the data first in to a parent table and then in to the child tables. You can specify the constraint based load ordering option in the Config Object tab of the session.

What is target load order in Informatica?

A target load order group is the collection of source qualifiers, transformations, and targets linked together in a mapping. You can set the target load order if you want to maintain referential integrity when inserting, deleting, or updating tables that have the primary key and foreign key constraints.

What is the difference between bulk and normal load in Informatica?

The main difference between normal and bulk load is, in normal load Informatica repository service create logs and in bulk load log is not being created. That is the reason bulk load loads the data fast and if anything goes wrong the data can not be recovered.

What is Target Update override in Informatica?

Target update override is also like source qualifier override. It is useful to update the target without using the update strategy transformation. You can find the Target Update Override option in the target definition properties tab. The syntax of update statement to be specified in Target Update Override is.

What is incremental aggregation in Informatica?

Incremental Aggregation is the process of capturing the changes in the source and calculating the aggregations in a session. This process makes the integration service to update the target incrementally and avoids the process of calculating the aggregations on the entire source.

IS NULL syntax in Informatica?

Returns whether a value is NULL. ISNULL evaluates an empty string as FALSE. To test for empty strings, use LENGTH….Example.

What is the difference between lookup and joiner in Informatica?

A joiner is used to join data from different sources. lookup is used to get related values from another table or check for updates etc in the target table. It supports Equiv Join only. It supports both Equiv and Non-Equiv join.