DE interview questions

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DE interview questions

Big Datạ ;»iEngineering■ '..i VInterview Questions & AnswersSource: InternetTABLES OF CONTENTSS.NoDESCRIPTIONPAGE No.1SQL INTERVIEW QUESTION12. •••SCA

DE interview questionsALA PROGRAMMING303SQOOP INTERMEM QUESTION544HIVE INTERVIEW QUESTION695SPARK INTERMEW QUESTION976TOP 250+ INTEMEW QUESTION1307MISC. INTERVIEW QUESTION1

67Follow Me : https://www.youtube.eom/c/SauravAgarwalSQL Interview Question with Answers1What is the SQL server query execution sequence?o FROM -> goe DE interview questions

s to Secondary files via primary tilec WHERE -> applies filter condition (non-aggregate column) o SELECT -> dumps data in tempDB system database o GRO

DE interview questions

UP BY -> groups data according to grouping predicate c HAVING -> applies filter condition (aggregate function) o ORDER BY -> sorts data ascending desc

Big Datạ ;»iEngineering■ '..i VInterview Questions & AnswersSource: InternetTABLES OF CONTENTSS.NoDESCRIPTIONPAGE No.1SQL INTERVIEW QUESTION12. •••SCA

DE interview questionsn normalization rules. Optimizing the memory but not in term of performance.Normalization will get rid of insert, update and delete anomalies.Normaliz

ation will improve the performance of the delta operation (aka. DML operation ); UPDATE. INSERT. DELETENormalization will reduce the performance of th DE interview questions

e read operation; SELECT3What are the three degrees of normalization and how Is normalization done in each degree?INF:A table is in INF when: All the

DE interview questions

attributes are single-valued.With no repeating columns (in other words, there cannot be two different columns with the same information).With no repea

Big Datạ ;»iEngineering■ '..i VInterview Questions & AnswersSource: InternetTABLES OF CONTENTSS.NoDESCRIPTIONPAGE No.1SQL INTERVIEW QUESTION12. •••SCA

DE interview questionsSOME (full, partial, or transitive) kind of functional dependencies between non-key and key attributes.99% of times, it’s usually INF.2NF:A table IS i

n 2NF when: • It is in INF.• There should not be any partial dependencies so they must be removed if they exist.3NF:A table is in 3NF when: • It is in DE interview questions

2NF.Follow Me : https://www.youtube.com/cZSauravAgarwal•There should not be any transitive dependencies so they must be removed if they exist.

Big Datạ ;»iEngineering■ '..i VInterview Questions & AnswersSource: InternetTABLES OF CONTENTSS.NoDESCRIPTIONPAGE No.1SQL INTERVIEW QUESTION12. •••SCA