What is the purpose of a field in a database?

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user says the db performance is slow or yesterday the query runned 1min and today its taking 30 min. how to trouble shot or were to start with?

1 Answers   HCL,

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What are the differences between hash join, merge join and nested loops?

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Explain what is meant by asymmetrical protocols?

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Is this statement true or false? All databases must be in third normal form?

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Mention a query to calculate the even and odd records from a table

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What is Two-Phase Commit ?

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What are the package used in DBMS ?

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1. How many nodes you are using project? 2. What is configuration file? 3. What is modules partition? How it is work in project? 4. What is Environment Variable? How it is use? 5. What is sequence? 6. How do you execute parallel jobs in projects? 7. If you run a job in job sequencer individually without any comments? 8. How many jobs did in your project? 9. How to schedule the job in Data stage 7.5 X2? 10. If you have 10 jobs in PX2, shall you run all jobs at a time? 11. I have 5 jobs (1-5), I connect with each other, but I want to run from 3-5 only how? 12. What is same partition? 13. If you have 40GB hard disk in I have 30GB data how I configure the nodes for partition? 14. Did you write any code for Data stage project? 15. Did you write any code for parallel job execution in your project? 16. Will you schedule all jobs at a time?

0 Answers   Cap Gemini,

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Enlist some commands of ddl, dml, and dcl.

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Which database is best for large data?

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What is dbms with example?

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