What are the best practices in Informatica?

What are the best practices in Informatica?

Best Practices in Informatica PowerCenter

• Use of Shared Folder for common/shared objects through different integrations.
• Stop on Errors in sessions.
• Source Qualifiers and Lookups without SQL Override.
• Data types and port accuracy.
• Complex Mappings.
• Comments and Descriptions.
• Rename the transformations.

How do I get last 3 records in Informatica?

then use filter(conditon exp. count>(agg. count-3)) then then connect to Target. You get last 3 records from file with out using sorter/rank trans.
…

1. You can associate the records from filw with a seq.
2. Sort it based on seq (descending)
3. Count till you send the first three records into target, filter the others.

How many rounds of interview is there for Informatica?

Informatica conducts 5-6 rounds to select freshers as Software Engineer in their organisation.

How many types of transformations are available in Informatica?

There are 3 Informatica transformations viz. External Procedure, Lookup, and Stored Procedure which can be unconnected in a valid mapping (A mapping which the Integration Service can execute).

What are the different mapping design tips for Informatica?

Informatica Developer: Tips & Tricks for Mapping Designer

• SQL Overrides :
• Lookups.
• Improper use of Stored Procedures/Functions.
• Too much work in one Process Flow.
• Failure to get volumetric analysis.
• Failure to get source data analysis.
• Too many Filters use Router.
• Unsorted data before Aggregator.

How do I load all 5 records in Informatica?

Extracting every nth row

1. Connect an expression transformation after source qualifier.
2. In expression create a new port (validate) and write the expression like in the picture below.
3. Connect a filter transformation to expression and write the condition in property like in the picture below.
4. Finally connect to target.

How do you get the first 100 rows from the flat file into the target?

1. First create the Exp transformation Immediate to Source Qualifier.
2. Use Variable port to Get the ronum for each record.
3. you can restrict this at filter with expression rownum<=100.

Does Informatica pay well?

The average Informatica salary ranges from approximately ₹7.4 Lakhs per year for a Associate Engineer to ₹ 39.4 Lakhs per year for a Principal Engineer. Salary estimates are based on 834 Informatica salaries received from various employees of Informatica.

How can I prepare for Informatica interview?

Basic Interview Questions

1. Differentiate between Informatica and DataStage.
2. What is Informatica PowerCenter?
3. Mention some typical use cases of Informatica.
4. How can we filter rows in Informatica?
5. Differentiate between Joiner and Lookup transformations.
6. In Informatica Workflow Manager, how many repositories can be created?

Which one is better joiner or Lookup in Informatica?

Joiner is better if you need to join hetrogenous sources or flat files with tables… If you use homogeneous tables, it is the best option to make use of LOOKUP…

Is filter An active transformation?

Filter transformation is a form of active transformation as it changes the number of records. It can help filter the records based on their condition.

Can we generate surrogate keys in Informatica?

Surrogate keys are used to store history and they are generated using sequence generator . Also you can version the records using sequence no using look up and expression transformation.

How do I validate a map in Informatica?

When you validate or save a mapping the results of the validation appear in the Output window. The Repository Manager also displays whether a mapping is valid. To validate a mapping, check out and open the mapping, and click Mappings > Validate. If the Output window is not open, click View > Output Window.

How do I separate duplicates and non duplicates in Informatica?

There are several ways to remove duplicates.

1. If the source is DBMS, you can use the property in Source Qualifier to select the distinct records.
2. You can use, Aggregator and select all the ports as key to get the distinct values.
3. You can use Sorter and use the Sort Distinct Property to get the distinct values.

How do I remove duplicates in a flat file in Informatica?

distinct property(keyword) is used to eliminate duplicate rows in Informatica from a database and a flat-file. We can eliminate duplicate rows from the flat-file by using group by function in an aggregator or in source qualifier in database. You can select distinct all or by using sorter transformation in flat-file.

How do I get the first 3 records in Informatica?

Informatica: Load First 3 records – YouTube

What is the average salary for a 3 years experience Informatica developer in India?

Highest salary that a Informatica Developer can earn is ₹8.5 Lakhs per year (₹70.8k per month). How does Informatica Developer Salary in India change with experience? An Entry Level Informatica Developer with less than three years of experience earns an average salary of ₹4.8 Lakhs per year.

What is ETL Developer Salary?

ETL Developer salary in India ranges between ₹ 3.6 Lakhs to ₹ 10.0 Lakhs with an average annual salary of ₹ 5.4 Lakhs. Salary estimates are based on 3.1k salaries received from ETL Developers.

Can we update target without primary key?

Your only way to update without primary key is to write an Target override in Target.By doing this, you dont need primary key for updation.

How do you load even and odd records in Informatica?

The even and odd records are split into two targets. This scenario we uses Router Transformation to achieve. Creating the two target tables. To split the records by using the position in the source file as even and odd using Expression and Router Transformation.

What is the difference between router and filter transformation?

– Router transformation provides mutually inclusive groups to have the same records, whereas Filter transformation used to restrict the incoming record. – Router transformation doesn’t block the incoming record, whereas Filter transformation blocks or restricts the incoming record on the condition given.

Which is faster join or lookup?

Generaly, sorted joiner is more effective on flat files than lookup, because sorted joiner uses merge join and cashes less rows. Lookup cashes always whole file. If the file is not sorted, it can be comparable.

Can we connect 2 active transformations in Informatica?

You cannot connect multiple active transformations or an active and a passive transformation to the same downstream transformation or transformation input group. You might not be able to concatenate the rows.

What is difference between surrogate key and primary key?

Surrogate key and primary key are two types of keys. The main difference between surrogate key and primary key is that surrogate key is a type of primary key that helps to identify each record uniquely, while the primary key is a set of minimal columns that helps to identify each record uniquely.

Can a domain have single node?

A single node installation consists of a domain with one node. The node hosts the domain. The Service Manager and all Informatica application services run on the node. An installation on multiple nodes consists of a gateway node, which hosts the domain, and additional nodes that run Informatica application services.