DataStage Interview Questions and Answers,Solution and Explanation - Part 3

Does the selection of 'Clear the table and Insert rows' in the ODBC stage send a Truncate statement to the DB or does it do some kind of Delete logic.
Ans:
There is no TRUNCATE on ODBC stages. It is Clear table blah blah and that is a delete from statement. On an OCI stage such as Oracle, you do have both Clear and Truncate options. They are radically different in permissions (Truncate requires you to have alter table permissions where Delete doesn't).


DataStage Interview Questions and Answers,Solution and Explanation - Part 2

What are conformed dimensions?
Ans:
A conformed dimension is a single, coherent view of the same piece of data throughout the organization. The same dimension is used in all subsequent star schemas defined. This enables reporting across the complete data warehouse in a simple format.


DataStage Interview Questions and Answers,Solution and Explanation

How did you handle reject data?
Ans:
Typically a Reject-link is defined and the rejected data is loaded back into data warehouse. So Reject link has to be defined every Output link you wish to collect rejected data. Rejected data is typically bad data like duplicates of Primary keys or null-rows where data is expected.


Forecasting External Environmental Elements

Strategic decision-making requires anticipation of and preparation for the future. One way to plan is through forecasting. Accurate forecasting of external environmental elements is essential for successful strategic management. To identify future environmental changes, opportunities, and threats, take the steps outlined below.

1. Select the environmental variables that are critical to your firm.


Behavioral Characteristics Required For Effective Business Analysis

As a business analyst, you are required to interact with other stakeholders on a regular basis. In the process, you form working relationships with each of the stakeholders.

Applying certain behavioral characteristics will help you to develop more effective relationships.

The behavioral characteristics of a business analyst should demonstrate these qualities:


Business analysis techniques

Often there are several different methods a business analyst could use to complete a task. Each method for completing a task is called a technique.

Techniques also provide information about the different forms that a task's output might take. For example, some techniques might produce outputs in a form that the business analyst will use to deliver information to stakeholders, such as a status report or a process checklist.


What are The Business analysis tasks

Each of the six business analysis knowledge areas has a purpose. The purpose of the Requirements Analysis knowledge area, for example, is to determine a solution to meet stakeholder needs.

A knowledge area is made up of tasks, each of which also has a purpose. Business analysts perform these tasks to accomplish the overall purpose of the knowledge area.


Pages

Subscribe to Universal Remote Codes TV RSS