Xdbs Data Research Analyst 1 Interview Questions and Answers

Searching is the process of looking for information or data in a systematic way.

• Searching involves identifying a specific topic or question to investigate.

• It can be done through various methods such as online research, surveys, interviews, or experiments.

• Effective searching requires critical thinking, analysis, and evaluation of sources.

• Examples of searching include conducting a literature review for a research paper, ...read more

Explain plan is a tool used to analyze and optimize SQL queries.

• Explain plan shows the steps the database takes to execute a query.

• It helps identify performance bottlenecks and suggests ways to optimize the query.

• The plan shows the order in which tables are accessed, the join methods used, and the indexes utilized.

• It can be accessed using the EXPLAIN keyword in SQL.

• Explain plan can be used to compare the performance of

Derivatives are financial contracts that derive their value from an underlying asset or security.

• Derivatives can be used for hedging or speculation.

• Examples include futures, options, swaps, and forwards.

• Derivatives can be traded on exchanges or over-the-counter.

• Derivatives can be complex and carry significant risk.

• Derivatives played a role in the 2008 financial crisis.

Derivatives are financial instruments whose value is derived from an underlying asset or security.

• Futures contracts

• Options contracts

• Swaps

• Forwards contracts

• Credit derivatives

• Interest rate derivatives

• Currency derivatives

• Commodity derivatives