pentaho report designer interview questions - Wikitechy

How to adding the page footer fields in pentaho ?

Editor — Sat, 17 Jul 2021 22:05:24 +0000

The page footer tab is used to present various attributes and functions.
For instance, you can use the page footer tab to print the max value of the age field at the bottom of the page.
The reporting engine permits these features for reporting functions.
The Data tab in the structure pane contains a symbol fx (marked as “1”).
It is the add function button.
Click the button to add different functions into the report.

Then, you will locate a dialog box with different functions segregated into different groups.
To select the maximum age of an employee at the page footer that means Maximum function in the Summary group that is denoted as “1”. Select it and click OK.

How to perform database join with PDI (Pentaho Data Integration) ?

Editor — Sat, 17 Jul 2021 22:03:26 +0000

Database join with PDI

PDI supports combination of two tables form the same database using a ‘Table Input’ method performing the join in SQL only.
On the other side, for joining two tables in different databases, user implement ‘Database Join’ step.
Though in database join, each input row query executes on the target system from the main stream, ensuing in lower performance as the number of queries implement on the B increases.
To avoid the above issues, there is an another option to merge rows form two different Table Input steps.
We can also use ‘Merge Join ‘step, using the SQL query having ‘ORDER BY’ clause. Remember, the rows must be perfectly sorted before implementing merge join.

What are the types of Data Integration Jobs ?

Editor — Sat, 17 Jul 2021 22:02:17 +0000

Types of Data Integration Jobs

The three major types of Data Integration Jobs are:

- Transformation Jobs
- Provisioning Jobs
- Hybrid Jobs

Transformation Jobs:

Used for preparing data and used only when there is no change in data until transforming of data job is finished.

Provisioning Jobs:

Used for transmission/transfer of large volumes of data. Used only when no change is data is allowed unless job transformation and on large provisioning requirement.

Hybrid Jobs:

Execute both transformation and provisioning jobs. No restrictions for data changes; it can be updates of success/failure. The transforming and provisioning needed are not large in this case.

What is the importance of metadata in pentaho ?

Editor — Sat, 17 Jul 2021 21:49:46 +0000

Importance of metadata

Metadata model in pentaho gives an encapsulation about the physical definitions of your database into a logical representation and define relationships between them.
These mappings are stored in a central repository and permits administrators and developers to create business-logical DB tables that are cost effective and optimized.
It simplifies the working of business users permitting them to build formatted reports and dashboards gives security to data access.

What is PDI Architecture ?

Editor — Sat, 17 Jul 2021 21:47:52 +0000

PDI Architecture

PDI consists of several components:

PDI (aka Kettle)
Spoon
Carte
Pan
Kitchen
Encr
Enterprise Edition (EE) Data Integration Server

Learn Pentaho – Pentaho tutorial – PDI Architecture – Pentaho examples – Pentaho programs

PDI (aka Kettle):

All of the tools.
PDI / Kettle is sometimes used to mean Spoon.

Spoon:

Main GUI.
Graphical Job / Transformation designer.
Execute Jobs / Transformations individually.
Monitor slave servers (Carte instances).

Carte:

HTTP server for remote execution of Jobs / Transformations.
Clusters with other Carte instances to distribute Job / Transformation execution.

Pan:

Command line execution of Transformations.

Kitchen:

Command line execution of Jobs.

Encr:

Command line tool for encrypting strings for storage / use by PDI.

Enterprise Edition (EE) Data Integration Server:

Data Integration Engine: Execution of Jobs / Transformations.
Security: integrate with existing security e.g. LDAP or Active Directory.
Scheduling and Monitoring.
Content Management: Managed repository of jobs and transformations.

What is Pentaho Dashboard ?

Editor — Sat, 17 Jul 2021 21:45:49 +0000

Pentaho Dashboard

Dashboards are the group of different information objects on single page such as tables, diagrams and textual content.
The Pentaho AJAX API is used to remove BI information. Pentaho Solution Repository includes the content definitions.
These dashboards provides the users a high-level understanding of how their business is performing.

The steps involved in Dashboard creation include:

Adding dashboard to the solution.
Defining dashboard content.
Implementing filters.
Editing dashboards.

What is Pentaho Reporting Evaluation ?

Editor — Sat, 17 Jul 2021 21:39:44 +0000

Pentaho Reporting Evaluation

Pentaho Reporting evaluation is a package of its reporting activities, capabilities and tools, built for first-phase evaluation such as accessing the sample, creating and editing reports, viewing and performing different interactions.
This evaluation are Pentaho platform elements, Report Designer and ad hoc interface for reporting used for local installation.