Principal Global Services Senior Specialist Interview Questions and Answers

COUNT is a SQL function used to count the number of rows in a table or a result set.

• COUNT can be used with the SELECT statement to count the number of rows that match a certain condition

• COUNT(*) counts all rows in a table

• COUNT(column_name) counts the number of non-null values in a specific column

Grouping in SQL is used to group data based on one or more columns.

• GROUP BY clause is used to group data in SQL

• Aggregate functions like SUM, COUNT, AVG can be used with GROUP BY

• GROUP BY can be used with HAVING clause to filter grouped data

To create Changes only extra, identify existing changes and add new ones without modifying the existing ones.

• Identify existing changes

• Add new changes without modifying existing ones

• Ensure new changes do not conflict with existing ones

• Document all changes made

Secured View and Table are two different ways of presenting data.

• Secured View is a restricted view of data that only shows certain information to certain users.

• Table is a way of presenting data in a structured format with rows and columns.

• Secured View is used to protect sensitive information from unauthorized access.

• Table is used to organize and display data in a clear and concise manner.

• Secured View can be customized ...read more

Balance groups can be created by analyzing usage patterns and grouping similar items together.

• Analyze usage patterns to identify similar items

• Group similar items together to create balance groups

• Consider factors such as frequency of use and importance of items in the group

• Examples include grouping similar products in a store or grouping tasks by priority in a to-do list

Extract is a process of retrieving data from a source system, while BIP is a tool used for creating and managing reports.

• Extract involves pulling data from a source system and storing it in a separate location for analysis or reporting.

• BIP is a tool used for creating and managing reports, which can be based on data extracted from a source system.

• Extract is typically a one-time process, while BIP can be used to generate...read more