TCS Oracle SQL and PLSQL Developer Interview Questions and Answers

OLAP systems are designed for analyzing and managing large volumes of data from multiple perspectives.

• OLAP stands for Online Analytical Processing

• OLAP systems allow users to analyze data in real-time

• They provide advanced analytics capabilities like data mining, forecasting, and trend analysis

• Examples of OLAP systems include Oracle Essbase, Microsoft Analysis Services, and IBM Cognos

Use Oracle External Tables and SQL Loader to process files in different formats and from different sources to load a single table.

• Create External Tables in Oracle to define the structure of the files from different sources.

• Use SQL Loader to load data from the files into the External Tables.

• Transform and manipulate the data as needed using SQL queries before inserting into the final table.

I would choose a location with a peaceful environment and good work-life balance.

• Prefer a location with low traffic and easy commute

• Look for nearby amenities like grocery stores, restaurants, and parks

• Consider the cost of living in the area

• Research the crime rate and safety of the neighborhood